International Space Station

Space station partners approve yearlong stay in 2015-16

An American astronaut and a Russian cosmonaut will spend a full year aboard the International Space Station in 2015-16, twice as long as current crews, to collect medical data on long-duration spaceflight.
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European cargo ship undocking aborted

Trouble with a control panel aboard the Russian Zvezda command module prevented the planned undocking of an unmanned European cargo ship from the International Space Station Tuesday. Read More...

Soyuz TMA-04M lands in Kazakhstan

Two Russian cosmonauts and a NASA flight engineer undocked from the International Space Station and fell back to Earth Sunday, making a pinpoint landing in Kazakhstan to close out a 125-day voyage. Read More...

Realtime coverage of U.S. EVA-19

Spacewalkers Sunita Williams and Akihiko Hoshide successfully re-installed an electrical switching unit on the space station's solar array truss Wednesday, restoring lost power to the lab complex (UPDATED). Read More...

Second spacewalk planned to finish aborted electrical work (UPDATED)

Astronauts Sunita Williams and Akihiko Hoshide will venture back outside the International Space Station Wednesday for another attempt to install a replacement power switching unit (updated timeline). Read More...

Realtime coverage of U.S. EVA-18

Engineers are assessing spacewalk repair options to free a stuck bolt and complete the installation of a power distribution box aboard the space station that derailed a spacewalk Thursday.
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Two station astronauts set for NASA spacewalk

Space station astronauts Sunita Williams and Akihiko Hoshide are set for a spacewalk Thursday to replace a power switching unit and install power cables needed for a future Russian module. Read More...

Cosmonauts walk in space to move crane, deploy satellite (UPDATED)

Realtime coverage of Russian EVA-31. Read More...

Boeing, SpaceX, Sierra Nevada win manned spacecraft contracts

NASA announced contracts Friday totaling up to $900 million to be divvied up between three companies -- SpaceX, Boeing and Sierra Nevada -- to continue development of commercial manned spacecraft. Read More...

Russian supply ship docks with station after four-orbit chase

A Russian Progress cargo ship loaded with three tons of fuel, hardware and supplies, glided to an automated docking with the International Space Station Wednesday evening after an abbreviated four-orbit rendezvous.
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Progress supply ship successfully redocks with space station

An unmanned Russian Progress supply ship successfully re-docked with the International Space Station Saturday after an aborted approach last week during tests of a new rendezvous antenna.
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Japanese cargo ship reaches space station

An unmanned Japanese cargo ship carrying more than five tons of supplies and equipment was attached to the International Space Station early Friday, one week after launch from southern Japan. Read More...

Progress re-docking called off after new antenna has problems

An attempt to re-dock a Russian Progress supply ship with the International Space Station was aborted by the ship's flight computer Monday night when a new rendezvous system failed to operate as expected. Read More...

Japanese cargo ship climbs into orbit, sets off after space station

An unmanned Japanese rocket carrying more than five tons of supplies, science gear and other equipment vaulted smoothly into orbit late Friday, setting off on a weeklong flight to the International Space Station. Read More...

Soyuz docks with space station, boosts lab crew back to six

A Russian Soyuz ferry craft glided to an automated docking with the International Space Station early Tuesday, bringing three fresh crew members to the lab complex two days after launch from Kazakhstan.
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Soyuz with all-veteran crew sets off after space station

A Soyuz spacecraft carrying a Russian commander, a NASA flight engineer and a Japanese astronaut -- all veteran space travelers -- blasted off late Saturday (U.S. time) and set off after the International Space Station. Read More...

Soyuz TMA-05M set for crew ferry flight to space station

Engineers are making final preparations for launch of a Russian Soyuz spacecraft early Sunday to ferry an all-veteran U.S.-Russian-Japanese crew to the International Space Station. Read More...

Soyuz TMA-03M brings three station fliers back to Earth (UPDATED)

Three station fliers strapped into a Soyuz ferry craft and plunged back to Earth early Sunday, landing in Kazakhstan to close out a six-month stay aboard the International Space Station.
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SpaceX cargo ship returns to Earth to close out historic mission (UPDATED)

In the final chapter of a history-making space drama, a commercial cargo ship completed a near-flawless test flight to the International Space Station with an on-target splashdown off the Baja California peninsula Thursday. Read More...

Dragon unberthing-to-splashdown timeline

Updated Dragon unberthing-to-splashdown timeline. Read More...

Astronauts open Dragon cargo ship, float inside

Running well ahead of schedule,the International Space Station's crew opened hatches between the Harmony module and the newly arrived SpaceX Dragon cargo ship early Saturday.
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SpaceX cargo ship captured by space station (UPDATED)

In a moment of high drama on the high frontier, flight engineer Donald Pettit, operating the International Space Station's robot arm, reached out and captured a commercial cargo ship to complete a complex rendezvous. Read More...

Dragon capsule breezes through station flyby (UPDATED)

A commercial cargo ship carried out a close flyby of the International Space Station early Thursday, successfully completing a series of tests to set the stage for berthing at the lab complex Friday. Read More...

SpaceX rocket takes off on commercial flight to space station (UPDATED)

Three days after a last-second launch abort, an unmanned cargo ship bound for the International Space Station blasted off early Tuesday and streaked into orbit to kick off the first commercial flight to the lab complex.
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SpaceX gears up for second launch try Tuesday

SpaceX engineers replaced a suspect valve in an engine that triggered a last-second launch abort Saturday and cleared the company's Falcon 9 rocket and Dragon cargo capsule for a second try Tuesday. Read More...

SpaceX Falcon 9/Dragon launch-to-docking timeline (UPDATED)

Updated SpaceX Falcon 9/Dragon launch to-docking timeline (May 22 launch target). Read More...

SpaceX Falcon 9 launch aborted after last-second glitch (UPDATED)

Launch of a commercial cargo ship bound for the International Space Station was aborted at the last instant early Saturday because of trouble with an engine valve. Repairs were ordered in hopes of making a Tuesday launch. Read More...

SpaceX commercial cargo ship prepped for launch to space station

In what proponents hail as the dawn of a new era in commercial spaceflight, a SpaceX Falcon 9 rocket and Dragon cargo ship are being prepped for an inaugural flight to the International Space Station (mission preview). Read More...

Soyuz TMA-04M docks with space station, boosts lab crew back to six

A Russian Soyuz ferry craft glided to a smooth linkup with the International Space Station early Thursday, bringing three fresh crew members to the orbital lab complex. Read More...

Russian Soyuz crew ferry craft takes off on two-day flight to space station

A Russian Soyuz spacecraft carrying one of the world's most experienced space fliers, a rookie cosmonaut and a NASA shuttle veteran blasted off from Kazakhstan to kick off a two-day flight to the International Space Station. Read More...

SpaceX launch to station slips to May 19

Work to validate critical navigation and control software has forced SpaceX to again delay the maiden flight of a commercial cargo ship bound for the International Space Station. Launch is now targeted for May 19. Read More...

SpaceX launch to station faces delay

Launch of a commercial cargo ship bound for the International Space Station almost certainly will be delayed from May 7 to at least May 10 and possibly longer to allow time for additional pre-flight analysis, sources say. Read More...

SpaceX test fires Falcon 9 engines in prelude to May 7 station flight

SpaceX test fired the nine first stage engines powering the company's Falcon 9 rocket Monday, a key milestone before launch May 7 on the first commercial cargo flight to the International Space Station. Read More...

Station crew makes pinpoint landing in Kazakhstan

Closing out a five-and-a-half-month stay in space, a NASA astronaut and two cosmonauts undocked from the International Space Station early Friday, setting the stage for a fiery ride back to Earth.
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SpaceX delays station cargo flight for on-going data review

Launch of a commercial cargo ship making its first flight to the International Space Station is expected to slip a week or so to give engineers more time to complete pre-flight testing and analysis, officials said Monday.
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Russian Progress cargo ship launched on station resupply mission

An unmanned Russian Progress supply ship blasted off from the Baikonur Cosmodrome in Kazakhstan Friday, rocketing smoothly into orbit and setting off after the International Space Station. Read More...

Shuttle Discovery heads for museum display

The space shuttle Discovery, bolted to the back of a NASA 747 jumbo jet, departed the Kennedy Space Center for the last time Tuesday, putting on a final show for thousands of Space Coast residents and tourists. Read More...

SpaceX Falcon 9 tentatively cleared for April 30 launch to space station

Pending the completion of last-minute work and a final review, a commercial cargo ship making its maiden flight to the International Space Station should be ready for launch April 30, officials said Monday. Read More...

Engineers resolve station-to-cargo module power problem

Flight controllers and the crew of the International Space Station successfully hooked up a backup power channel Saturday to route station power to a European Space Agency cargo ship, avoiding the prospect of a hurried unloading and premature undocking. (UPDATED) Read More...

Space debris forces station crew to take shelter in Soyuz capsules

The six-man crew of the International Space Station split up and briefly took shelter inside two three-seat Russian Soyuz re-entry vehicles early Saturday as a piece of space junk whizzed harmlessly past the lab complex.
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European cargo ship launched on flight to space station

An Ariane 5 rocket blasted off from Kourou, French Guiana, early Friday, boosting a European Space Agency cargo ship into orbit for a flight to the International Space Station (UPDATED).
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Realtime coverage of Russian EVA-30

Two Russian spacewalkers moved a telescoping crane from one space station module to another Thursday, but the work proved more difficult than expected and other tasks had to be deferred. Read More...

NASA hopes to avoid major budget shortfalls in commercial space initiative

NASA managers are hopeful Congress will support the Obama administration's request for more than $800 million in 2013 to fund development of commercial manned spacecraft. The alternative, they say, is additional delay. Read More...

NASA's 2013 budget cuts Mars missions, boosts manned space initiatives

The Obama administration is requesting $17.7 billion for NASA in its fiscal 2013 budget, boosting spending for commercial manned space flight while reducing the scope of Mars exploration.
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SpaceX cargo delivery test flight slips another month to late April

Launch of the first commercial cargo ship bound for the International Space Station will slip from late March to late April at the earliest to give SpaceX engineers time to fully test complex flight software, officials say. Read More...

Russia revises Soyuz launch schedule after processng mishap

Upcoming Russian Soyuz flights to the International Space Station will be delayed in the wake of a test mishap that over pressurized and damaged the next spacecraft in the launch sequence. Read More...

Cargo ship docks with space station; Soyuz issue assessed

After a two-day orbital chase, an unmanned Russian Progress supply ship carrying 2.9 tons of supplies and equipment carried out a smooth automated docking with the International Space Station Friday evening. Read More...

Russian cargo ship takes off for space station

An unmanned Russian Progress supply ship loaded with 2.9 tons of supplies and equipment blasted off from the Baikonur Cosmodrome in Kazakhstan Wednesday, bound for the International Space Station. Read More...

SpaceX cargo launch on hold until at least late March

Launch of a SpaceX commercial cargo ship on an initial test flight to the International Space Station, originally planned for Feb. 7, is expected to slip to at least the end of March, officials said Friday Read More...

Soyuz docks with space station; Russians investigate comsat launch failure

Amid word of yet another Russian space failure -- the fifth this year -- a Russian Soyuz ferry craft glided to a problem-free docking with the International Space Station Friday, boosting the lab's crew back to six. Read More...

Soyuz TMA-03M rockets into orbit, bound for space station

In bitterly cold weather, a Russian Soyuz rocket carrying a three-man all-veteran crew blasted off from the Baikonur Cosmodrome in Kazakhstan Wednesday and set off after the International Space Station. Read More...

Soyuz TMA-03M set for launch to boost ISS crew back to six

A Soyuz spacecraft is poised for launch Wednesday to ferry three fresh crew members to the International Space Station, boosting the lab's staff back to six. Read More...

SpaceX shoots for Feb. 7 launch to space station

NASA has agreed to let Space Exploration Technologies combine two test flights of the company's unmanned Dragon cargo ship into a single mission, aiming for a launch Feb. 7 to the International Space Station. Read More...

Soyuz TMA-02M brings three station crew members back to Earth

A Russian Soyuz spacecraft plunged back into the atmosphere Monday evening, carrying three space station crew members to a snowy pre-dawn landing in Kazakhstan to close out a five-and-a-half-month stay in space. Read More...

Soyuz TMA-22 docks with space station

A Russian Soyuz spacecraft glided to a smooth automated docking with the International Space Station early Wednesday, closing out a problem-free two-day rendezvous and boosting the lab's crew back to six. Read More...

Soyuz TMA-22 blasts off on delayed space station mission

A Russian Soyuz spacecraft carrying two cosmonauts and a NASA astronaut blasted off in blizzard-like conditions late Sunday U.S. time, kicking off a delayed flight to the International Space Station. Read More...

Progress cargo ship docks with space station

An unmanned Russian Progress cargo ship loaded with 2.9 tons of supplies and equipment completed a smooth automated docking with the International Space Station Wednesday Read More...

Boeing leases shuttle processing facility for commercial CST-100 capsule

The Boeing Co. will process its proposed CST-100 commercial manned spacecraft in a now-vacant space shuttle processing hangar in a first-of-a-kind deal valued at up to $50 million. Read More...

Russian Progress supply ship successfully launched on space station flight

Two months after a rare Russian launch failure, an unmanned Progress cargo ship loaded with 2.9 tons of supplies and equipment bound for the International Space Station rocketed smoothly into orbit Sunday Read More...

Station crew studies how microgravity affects eyesight

In the wake of recent concerns about the effects of prolonged weightlessness on vision, space station astronauts now are carrying out regular eye exams to collect more data. Read More...

China launches prototype lab module for rendezvous, docking tests

In a major milestone for China's space program, a Long March rocket successfully boosted an unmanned prototype space station module into orbit Thursday for tests of robotic rendezvous and docking systems. Read More...

No comm? No problem, says Soyuz astronaut

What appeared to be a communications problem that left Russian flight controllers in the dark about the status of a Soyuz capsule descending to Earth Sept. 16 was, in fact, no problem at all, a crew member said Thursday. Read More...

Soyuz TMA-21 returns to Earth, suffers radio blackout but lands safely (UPDATED)

Three space station crew members returned to Earth aboard the Russian Soyuz TMA-21 crew ferry craft late Thursday, leaving three crewmates behind to await the delayed arrival of replacements. Read More...

NASA will evaluate ATK's Liberty rocket as possible manned launcher

NASA will evaluate ATK's proposed two-stage Liberty rocket as a possible manned launcher for future commercial flights to the space station under an unfunded Space Act Agreement, officials said Tuesday. Read More...

Station astronauts hopeful Soyuz problem resolved soon

A space station astronaut said Tuesday the Russians may be able to launch a manned Soyuz spacecraft to the lab complex by early November if an ongoing failure investigation goes well. Read More...

Russians delay Soyuz re-entry as Progress failure probe proceeds

Russian managers have decided to briefly postpone the planned re-entry of a Soyuz ferry craft carrying three space station crew members amid work to pinpoint the cause of a Progress launch failure Aug. 24. Read More...

Manned flights to/from space station face delays in wake of Progress failure

Upcoming manned flights to and from the International Space Station are facing delays because of the Aug. 24 failure of an unmanned Soyuz carrying a Progress supply capsule, a senior NASA manager said Monday. Read More...

Unmanned Progress supply ship lost during launch to space station (UPDATED)

Russian engineers are assessing telemetry to determine the cause of an upper stage malfunction that triggered the loss of an unmanned Progress cargo ship loaded with 2.9 tons of supplies bound for the space station. Read More...

Realtime coverage of Russian EVA-29

Cosmonauts Sergei Volkov and Alexander Samokutyaev launched a small amateur radio satellite during a six-hour 23-minute spacewalk Wednesday, but relocation of a large cargo crane had to be postponed. Read More...

'Mission complete:' Atlantis returns to Earth, closing out final shuttle flight

The shuttle Atlantis dropped out of a moon-dappled sky and settled to a flawless landing Thursday to close out NASA's 135th and final shuttle mission, the end of an era for American manned spaceflight. (UPDATED) Read More...

Astronauts ready Atlantis for final re-entry

The crew of the shuttle Atlantis is gearing up for NASA's final shuttle re-entry and landing to close out three decades of shuttle operations. There are no technical issues and the weather appears ideal. Read More...

Weather looks good for final shuttle landing

NASA braces for the space shuttle Atlantis' historic return to Florida Thursday, bringing the iconic program to an end after three decades and 135 missions. Read More...

Astronauts test re-entry systems, pack for landing

The crew of the shuttle Atlantis, working through one of the busiest days of their mission, tested the ship's re-entry systems Wednesday and packed up for landing Thursday to close out NASA's final shuttle flight. Read More...

Shuttle Atlantis undocks from space station (UPDATED)

The crew of the shuttle Atlantis undocked from the International Space Station early Tuesday after a successful resupply mission, setting the stage for NASA's 135th and final shuttle landing Thursday. Read More...

Astronauts move cargo module to shuttle, bid station crew farewell (UPDATED)

The Atlantis astronauts moved the Raffaello cargo module back to the shuttle Monday, closing out a busy space station resupply mission. The crew then floated back aboard the orbiter to rig the ship for undocking early Tuesday. Read More...

Shuttle crew wraps up space station resupply work (UPDATED)

The Atlantis astronauts put in a final day of logistics transfer work Sunday, working through off-duty time to finish moving a last few items into the Raffaello multi-purpose logistics module for return to Earth. Read More...

Shuttle crew moves into home stretch of final shuttle mission

Working through the home stretch of NASA's final shuttle mission, the Atlantis astronauts are focusing on repacking a cargo module for return to Earth and wrapping up logistics transfers to the space station. Read More...

Flight computer restarted; CBS Radio interviews crew

Shuttle commander Christopher Ferguson successfully restarted a shuttle flight computer early Friday that failed Thursday, setting off alarms and waking the crew. The astronauts will chat with President Obama later in the day. Read More...

President Obama congratulates shuttle crew, vows 'exciting new era' of exploration

President Barack Obama called the International Space Station Friday to congratulate the shuttle Atlantis' crew on NASA's 135th and final shuttle mission, vowing an "exciting new era" of space exploration. Read More...

Cargo transfers 70 percent done; computer failure wakes astronauts

The Atlantis astronauts took a half-day off Thursday to relax and enjoy the view after a busy but productive week in space. The crew is about 70 percent complete with work to transfer cargo to and from the space station. Read More...

Shuttle astronauts focus on cargo transfers to station (UPDATED)

The Atlantis astronauts are about halfway through a busy week of supply transfers to the International Space Station. The lab's toilet is back in operation after a brief hiatus, along with the urine recycling system. Read More...

Realtime coverage of STS-135 EVA-1

Space station astronauts Michael Fossum and Ronald Garan staged a successful six-hour 31-minute spacewalk Tuesday, the final excursion of the space shuttle era. Read More...

Space station astronauts prep for spacewalk

Two space station astronauts are gearing up for a planned six-and-a-half-hour spacewalk to install experiment hardware on the lab complex and to move a failed coolant pump to the shuttle Atlantis for return to Earth. Read More...

Astronauts attach cargo module to ISS; shuttle mission extended one day

The Atlantis astronauts attached a bus-size cargo module to the International Space Station early Monday. Mission managers, meanwhile, approved a one-day mission extension to give the crew more time for logistics transfers. Read More...

Shuttle Atlantis docks with space station one last time (UPDATED)

The space shuttle Atlantis glided to a picture-perfect docking with the International Space Station Sunday, bringing more than five tons of supplies and equipment to the sprawling lab complex in the shuttle program's final visit. Read More...

Astronauts kick off heat shield inspections, docking preps

The Atlantis astronauts are working through a busy day in space, inspecting the shuttle's heat shield and gearing up for rendezvous and docking with International Space Station Sunday. Read More...

Shuttle Atlantis rockets into history as final flight begins

After a cliff-hangar countdown, the space shuttle Atlantis majestically rocketed into history Friday, putting on one last show for spectators jamming area roads and beaches to witness NASA's 135th and final shuttle launch. Read More...

Realtime coverage of STS-135 launch countdown

Despite a dismal forecast, NASA managers decided to fuel the shuttle Atlantis for a launch attempt Friday, setting the stage for the agency's 135th and final shuttle mission (UPDATED). Read More...

NASA monitors weather, preps Atlantis for Friday launch (UPDATED)

Keeping tabs on stormy weather, engineers readied the shuttle Atlantis for blastoff Friday on NASA's final shuttle flight. Engineers reviewed data Thursday to make sure no sensitive systems were affected by a lightning strike near the pad. Read More...

Shuttle forecast 70 percent 'no go' for Friday launch (UPDATED)

Forecasters are predicting a 70 percent chance of stormy weather Friday that could delay launch of the shuttle Atlantis. But NASA managers say they plan to press ahead barring a dramatic change for the worse. Read More...

STS-135 Mission Preview

The shuttle Atlantis is poised for launch Friday on the iconic program's 135th and final flight, bringing the curtain down on one of the nation's greatest technological triumphs (mission preview). Read More...

Countdown begins for final shuttle flight; stormy weather likely

Countdown clocks began ticking Tuesday for the shuttle Atlantis' launch Friday on NASA's 135th and final shuttle mission, a flight to deliver more than 8,000 pounds of supplies and equipment to the International Space Station. Read More...

Astronauts arrive for final shuttle launch

The crew of the shuttle Atlantis celebrated the July Fourth holiday Monday by flying to Florida aboard sleek T-38 jet trainers to prepare for launch Friday on the 135th and final shuttle mission.
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Space debris prompts station crew to shelter aboad Soyuz spacecraft (UPDATED)

The six-member crew of the International Space Station was told to seek shelter in two Russian Soyuz spacecraft early Tuesday because of a predicted close approach by an unknown piece of space debris.
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Progress M-11M cargo craft docks at space station

An unmanned Russian Progress cargo ship glided to a smooth automated docking with the the International Space Station Thursday, two days after launch from the Baikonur Cosmodrome in Kazakhstan. Read More...

External tank inspections proceeding smoothly, fuel valve replaced

With the Atlantis astronauts on hand for a practice countdown Thursday, engineers are making good progress with work to inspect beefed-up ribs in the shuttle's external tank and to replace a leaking main engine fuel valve. Read More...

Progress cargo ship blasts off on station resupply flight

A Russian Progress cargo ship loaded with three tons of supplies and equipment bound for the International Space Station blasted off from the Baikonur Cosmodrome Tuesday. Docking is expected Thursday. Read More...

Mark Kelly announces retirement from NASA

Astronaut Mark Kelly, commander of the shuttle Endeavour's final mission and husband of Arizona Rep. Gabrielle Giffords, gravely wounded in a January assassination attempt, will retire from NASA and the Navy on Oct. 1. Read More...

Atlantis crew flies to Florida for emergency training, practice countdown

The shuttle Atlantis' crew flew to the Kennedy Space Center Monday to review emergency procedures and participate in a dress-rehearsal countdown Thursday, a major milestone on the road to launch July 8. Read More...

Main engine fuel valve replacement no impact to 7/8 launch target

Engineers readying the shuttle Atlantis for launch July 8 plan to replace a leaking main engine fuel valve in parallel with external tank inspections next week. Read More...

Shuttle fueling test underway; engine valve issue

After a delay to assess the impact of overnight thunderstorms, engineers pressed ahead with a fueling test Wednesday to verify the integrity of structural stiffeners in the shuttle Atlantis' external tank. Read More...

Soyuz TMA-02M docks with space station

Monitoring a weak thruster, commander Sergei Volkov guided a Russian Soyuz spacecraft to a smooth automated docking with the International Space Station at 5:18 p.m. EDT (GMT-4) Thursday. Read More...

NASA releases photos of shuttle Endeavour and space station

NASA has released dramatic photographs of the shuttle Endeavour docked at the International Space Station that were shot during the departure of the Russian Soyuz TMA-20 spacecraft May 23. Read More...

Soyuz TMA-02M blasts off from the Baikonur Cosmodrome

A Russian Soyuz spacecraft carrying a veteran cosmonaut, a Japanese physician-astronaut and a NASA shuttle veteran blasted off from the Baikonur Cosmodrome Tuesday, bound for the International Space Station. Read More...

Shuttle Endeavour glides to smooth Florida touchdown (UPDATED)

The shuttle Endeavour glided to a ghostly pre-dawn landing Wednesday to close out its 25th and final mission, clearing the way for NASA's last shuttle launch July 8. Read More...

Shuttle Endeavour rigged for entry; Atlantis heads for launch pad

The shuttle Endeavour's crew closed the ship's payload bay doors and geared up for re-entry and landing early Wednesday to close out the orbiter's 25th and final mission. Touchdown is expected at 2:35 a.m. EDT. Read More...

Astronauts test Endeavour's re-entry systems, prep for landing (UPDATED)

The Endeavour astronauts tested the shuttle's re-entry systems overnight Monday and began packing up for landing early Wednesday to close out the orbiter's 25th and final voyage. Read More...

Shuttle Endeavour undocks from International Space Station (UPDATED)

The shuttle Endeavour undocked from the International Space Station for the 12th and final time late Sunday, backing away for a fly-around photo survey before testing new navigation sensors and software.
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Shuttle astronauts return to Endeavour, prepare for undocking (UPDATED)

The Endeavour astronauts wrapped up last-minute transfers early Sunday, said farewell to the crew of the International Space Station and moved back aboard the shuttle to prepare the ship for undocking Sunday night. Read More...

Astronauts work on CO2 scrubber, transfers (UPDATED)

The shuttle Endeavour's crew helped out with repairs to one of the International Space Station's carbon dioxide scrubbers Saturday as NASA's next-to-last shuttle mission moved into the home stretch of a 16-day mission.
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Realtime coverage of STS-134 EVA No. 4

Astronauts Michael Fincke and Gregory Chamitoff wrapped up a xx-hour xx-minute spacewalk early Friday, completing the U.S. segment of the International Space Station after 12 years of construction. Read More...

Endeavour astronauts set for final spacewalk

The Endeavour astronauts plan to carry out a fourth and final spacewalk Friday to mount the shuttle's no-longer-needed heat shield inspection boom on the International Space Station. Read More...

Astronauts inspect heat shield; Kelly talks to Tucson media

The Endeavour astronauts carried out a final inspection of the shuttle's heat shield early Thursday, fielded questions from reporters and geared up for a fourth and final spacewalk Friday. Read More...

Realtime coverage of STS-134 EVA No. 3

Astronauts Andrew Feustel and Michael Fincke carried out a six-hour 54-minute spacewalk Wednesday, installing a robot arm mounting fixture on the space station and installing wiring for the Russian segment. Read More...

Shuttle astronauts set for Wednesday spacewalk

The Endeavour astronauts helped out with space station maintenance Tuesday amid preparations for an overnight spacewalk, the third of four planned by the shuttle fliers. Read More...

Soyuz TMA-20 lands in Kazakhstan (UPDATED)

A Russian Soyuz spacecraft carrying three returning space station crew members landed in Kazakhstan Monday to wrap up a 159-day stay in space. Read More...

Shuttle crew takes time off amid Soyuz TMA-20 undocking preps

The Endeavour astronauts took the day off Monday amid preparations for the afternoon departure of three space station crew members aboard a Russian Soyuz spacecraft. Read More...

Space station change-of-command ceremony

In a brief ceremony Sunday on the eve of undocking, outgoing Expedition 27 commander Dmitry Kondratyev handed over command of the International Space Station to cosmonaut Andrey Borisenko. Read More...

Realtime coverage of STS-134 EVA No. 2

Astronauts Andrew Feustel and Michael Fincke completed an eight-hour seven-minute spacewalk at 10:12 a.m. EDT Sunday, the second of four EVAs planned by the Endeavour astronauts. Read More...

Astronauts set for second spacewalk

Astronauts Andrew Feustel and Michael Fincke are set for a planned six-and-a-half-hour spacewalk Sunday to top off the ammonia coolant in a space station solar array and to lubricate a solar array drive mechanism. Read More...

Analysis shows damaged heat shield tile no threat to re-entry (UPDATED)

Data from a "focused" inspection of a damaged heat shield tile on the belly of the shuttle Endeavour shows the orbiter can safely re-enter as is, without the need for any repairs or additional study, NASA said Saturday. Read More...

Pope Benedict XVI calls astronauts

Pope Benedict XVI called the combined shuttle-station crews from the Vatican Saturday, asking about the environment and the role of science and technology in solving global problems. Read More...

NASA orders 'focused' inspection of damaged heat shield tile

The Endeavour astronauts will use an instrumented boom on the end of the shuttle's robot arm early Saturday to make a close-up, "focused" inspection of a gouge in a heat shield tile on the belly of the orbiter. Read More...

Departing Soyuz crew to snap space station portrait

U.S. and Russian space managers have agreed to stage an out-of-this-world photo op Monday when the crew of a departing Soyuz photographs the space station and the shuttle Endeavour in a one-of-a-kind family portrait. Read More...

Shuttle Atlantis re-targeted for final launch on July 8

NASA managers have retargeted launch of the Atlantis on the 135th and final shuttle flight for around 11:40 a.m. EDT on July. Read More...

Realtime coverage of STS-134 EVA No. 1

Astronauts Andrew Feustel and Gregory Chamitoff are carrying out a planned six-and-a-half-hour spacewalk to replace space exposure experiments and to set up an ammonia coolant line for use during an EVA Sunday. Read More...

Astronauts prep for first spacewalk

Astronauts Andrew Feustel and Gregory Chamitoff are gearing up for a planned six-and-a-half-hour spacewalk, the first of four planned for the shuttle Endeavour's mission. Read More...

NASA still assessing need for 'focussed' inspection of shuttle heat shield

Engineers are continuing to assess two damage sites on the belly of the shuttle Endeavour to determine if an additional, "focused," inspection might be needed Saturday to collect more data. Read More...

Endeavour astronauts install $2 billion cosmic ray detector (UPDATED)

The $2 billion Alpha Magnetic Spectrometer was attached to the International Space Station early Thursday. Scientists say the instrument already is detecting "thousands and thousands" of cosmic ray particles. Read More...

Kelly says wife doing well after surgery

Shuttle commander Mark Kelly told reporters Thursday his wife, Arizona Rep. Gabrielle Giffords, came through surgery Wednesday in good condition as she continues her recovery from an assassination attempt in January. Read More...

NASA assesses tile damage on shuttle Endeavour's belly

Engineers are assessing several gouges and dings spotted in protective heat shield tiles on the underside of the shuttle Endeavour during final approach to the space station Wednesday. Read More...

Shuttle Endeavour docks with space station (UPDATED)

Commander Mark Kelly guided the shuttle Endeavour to a "silky smooth" docking with the International Space Station Wednesday and his crewmates successfully mounted a massive spare parts pallet on the lab's power truss. Read More...

Astronauts inspect heat shield; external tank performed well during launch

The Endeavour astronauts carried out a detailed inspection of the shuttle Endeavour's nose cap and wing leading edge panels Tuesday amid work to ready the shuttle Atlantis for launch on NASA's final shuttle flight in July. Read More...

Shuttle Endeavour rockets away on final mission (UPDATED)

The shuttle Endeavour rocketed away on its 25th and final flight Monday, putting on a spectacular, if brief, show for spectators as it knifed through a low deck of clouds and streaked into orbit. Read More...

Realtime coverage of STS-134 launch countdown (UPDATED)

Commander Mark Kelly and his five crewmates have strapped in aboard the shuttle Endeavour to await liftoff at 8:56:28 a.m. EDT. Forecasters are monitoring a deck of low clouds near the spaceport that could cause problems. Read More...

Shuttle Endeavour readied for fueling (UPDATED)

Engineers readied the shuttle Endeavour for fueling overnight Sunday, setting the stage for launch early Monday on a space station assembly mission. Forecasters continue to predict a 70 percent chance of good weather. Read More...

Shuttle Endeavour cleared for launch

NASA's Mission Management Team met Saturday and cleared the shuttle Endeavour for launch Monday on a delayed mission to deliver a $2 billion particle physics detector to the International Space Station. Read More...

Countdown begins for Monday shuttle launch

Engineers restarted the shuttle Endeavour's countdown Friday, setting the stage for launch Monday on a space station assembly flight. Forecasters continue to predict a 70 percent chance of good weather. Read More...

Endeavour astronauts return to Florida to prep for Monday launch

The Endeavour astronauts flew back to Florida Thursday to prepare for a delayed launch Monday on a space station assembly mission. Forecasters are predicting a 70 percent chance of good weather. Read More...

Shuttle Endeavour cleared for May 16 launch try

NASA managers met Monday and decided to press ahead with work to ready the shuttle Endeavour for a second launch try May 16 after extensive troubleshooting to resolve problems with hydraulic system fuel line heaters. Read More...

Shuttle launch slips to at least May 16

The shuttle Endeavour's launch will be delayed to at least May 16, NASA officials said Friday, pending tests to confirm the health of hydraulic system electrical components that derailed an April 29 attempt. Read More...

Failure analysis indicates possible external short circuit

Engineers troubleshooting a suspect electrical distribution box removed from the shuttle Endeavour's engine compartment after a launch scrub Friday have found damage that could indicate an external short circuit. Read More...

Italian space station astronaut's mother dies

European Space Agency astronaut Paolo Nespoli, nearing the end of a long-duration stay aboard the International Space Station, is mourning the death of his 78-year-old mother, who passed away Monday near Milan, Italy, after an illness. Read More...

Shuttle launch slips to at least May 10, possibly later

Work to repair the shuttle Endeavour will delay the ship's next launch attempt to at least May 10, engineers said Monday. An official launch date is expected Friday, after repairs are complete. Read More...

Avionics swap-out ordered; shuttle launch off until at least May 8 (UPDATED)

Engineers have traced an electrical glitch that grounded the shuttle Endeavour Friday to an avionics box in the ship's engine compartment. Replacing the box will delay launch until at least May 8. Read More...

Engineers troubleshoot electrical glitch (UPDATED)

Engineers troubleshooting an electrical glitch that grounded the shuttle Endeavour Friday have verified that a cockpit fuse panel is working normally. Additional tests to narrow down the source of the problem will determine if a launch attempt Monday is possible. Read More...

Hydraulic system glitch grounds shuttle Endeavour (UPDATED)

Trouble with the shuttle Endeavour's hydraulic power system Friday forced NASA managers to delay launch on a long-awaited space station assembly mission. Read More...

Weathering storms, Endeavour fueled for launch

The shuttle Endeavour was fueled for launch Friday after weathering overnight storms that delayed countdown preparations. Forecasters are calling for a 70 percent chance of good weather for launch at 3:47:55 p.m. EDT. Read More...

Storm front slows, shuttle launch now 70 percent 'go'

NASA managers kept tabs on stormy weather approaching the Kennedy Space Center Thursday as the shuttle Endeavour is prepared for launch Friday. The forecast calls for a 70 percent chance of good weather. Read More...

Endeavour in good shape; pre-launch weather a concern

The shuttle Endeavour's countdown is ticking smoothly toward launch Friday on a space station assembly mission. Commander Mark Kelly's wife, Rep. Gabrielle Giffords, flew to Florida Wednesday to be on hand for launch. Read More...

STS-134 Mission Preview

NASA is readying the shuttle Endeavour for launch Friday on its 25th and final mission, a high-profile voyage to deliver supplies, spare parts and a $2 billion physics experiment to the International Space Station. Read More...

STS-134 countdown begins; astronauts arrive for launch

The Endeavour astronauts flew to Florida Tuesday for the start of their countdown to blastoff Friday on a high-profile space station assembly flight. Forecasters are predicting an 80 percent chance of acceptable weather. Read More...

Shuttle Endeavour cleared for April 29 launch

The shuttle Endeavour has been cleared for launch April 29 on its 25th and final mission, a four-spacewalk flight to deliver supplies, spare parts and a $2 billion particle physics detector to the International Space Station. Read More...

Station crew, space officials mark Gagarin anniversary

The space station's crew joined Russian leaders, space officials and their international counterparts Tuesday to celebrate the 50th anniversary of Yuri Gagarin's trail-blazing 1961 flight to become the first human in space. Read More...

Government shutdown averted in last-minute deal

A last-minute compromise averted a looming government shutdown late Friday with agreement on a stop-gap spending bill. A vote is expected next Thursday on legislation that will fund the government through the end of the fiscal year. Read More...

NASA braces for possible government shutdown

Bracing for a potential government shutdown, NASA managers are evaluating the shuttle launch schedule and putting plans in place to continue near-normal operation of the International Space Station if a furlough is ordered. Read More...

Soyuz TMA-21 docks with space station (UPDATED)

A Russian Soyuz spacecraft carrying three fresh crew members completed a smooth, automated rendezvous and docking with the International Space Station Wednesday, bringing three fresh crew members to the lab complex. Read More...

Tracking shows no need for station crew to seek shelter aboard Soyuz (UPDATED)

Flight controllers monitoring a piece of space debris told the International Space Station's crew that radar tracking showed the odds of a collision did not warrant seeking shelter aboard a Soyuz spacecraft. Read More...

Soyuz TMA-21 roars into orbit with three bound for space station (UPDATED)

A Russian Soyuz TMA-21 spacecraft blasted off from the Baikonur Cosmodrome in Kazakhstan Monday carrying two rookie cosmonauts and a NASA shuttle veteran to the International Space Station. Read More...

Next shuttle launch delayed to April 29

The shuttle Endeavour's launch on a mission to the International Space Station has been delayed 10 days to April 29 to avoid a conflict with the arrival of an unmanned Russian Progress supply ship. Read More...

Kelly says 'good chance' his injured wife can attend launch

Kelly says his injured wife continues to make progress and that there's a 'pretty good chance' she will be able to attend his launch aboard the shuttle Endeavour next month. Read More...

Kelly abruptly cancels media interviews

Shuttle commander Mark Kelly abruptly pulled himself from planned pre-flight media interviews, citing a reluctance to field personal questions about his wife, Gabrielle Giffords. Read More...

Soyuz TMA-01M returns to Earth (UPDATED)

Outgoing space station commander Scott Kelly, Soyuz TMA-01M commander Alexander Kaleri and flight engineer Oleg Skripochka undocked and returned to Earth early Wednesday, closing out a 159-day mission. Read More...

Worker killed in shuttle launch pad mishap (UPDATED)

A United Space Alliance worker was killed early Monday after a fall at launch complex 39A where the shuttle Endeavour is being readied for flight April 19. All work at the pad was suspended for the day. Read More...

Shuttle Endeavour hauled to launch pad

The shuttle Endeavour was mounted atop launch pad 39A Friday, setting the stage for launch April 19 on a four-spacewalk mission to resupply the International Space Station and deliver a $2 billion physics experiment.
Read More...

Shuttle Discovery glides to final landing (UPDATED)

The shuttle Discovery glided to a smooth touchdown Wednesday to wrap up the orbiter's 39th and final mission, a milestone marking the beginning of the end for NASA's winged rocketships. Read More...

Shuttle Discovery prepped for final landing

With windy but acceptable weather expected, the shuttle Discovery's crew is preparing the ship for its 39th and final re-entry, setting up for a Kennedy Space Center landing to close out a successful space station assembly mission. Read More...

Shuttle cleared for Wednesday landing; good weather expected

With a favorable forecast and no technical problems, NASA is gearing up to bring the shuttle Discovery back to Earth Wednesday to close out the veteran spaceplane's 39th and final flight. Read More...

Discovery astronauts reflect on veteran shuttle's final voyage

The shuttle Discovery's crew, packing up for the ship's final re-entry and landing Wednesday, said Americans should be proud of the shuttle program, but expressed concern about the lack of a near-term replacement. Read More...

Discovery crew enjoys 'live' wakeup tune; packs for re-entry

The shuttle Discovery's crew enjoyed a live wakeup call from Big Head Todd and the Monsters in mission control Tuesday before testing the ship's re-entry systems and packing up for landing Wednesday. Read More...

Shuttle Discovery undocks from space station (UPDATED)

The shuttle Discovery's crew, after a "Star Trek" wakeup call from William Shatner, undocked from the International Space Station early Monday, wrapping up an extended assembly and resupply mission. Read More...

Astronauts wrap up equipment transfers; hatches closed for undocking Monday

The Discovery astronauts completed final equipment transfers to and from the International Space Station Sunday and returned to the shuttle to rig the ship for departure early Monday to wrap up a busy resupply mission. Read More...

Astronauts service space station's air purifier, oxygen generator (UPDATED)

The Discovery astronauts and their space station counterparts, nearly finished unloading a newly attached storage module, carried out needed maintenance on the station's life support systems Saturday. Read More...

Astronauts continue module unpacking work (UPDATED)

The Discovery astronauts are putting in another day of work to unload the newly attached Permanent Multipurpose Module while mission planners revise the crew's timeline to reflect a second additional day docked to the lab complex. Read More...

President Obama calls shuttle crew; mission extended another day

President Barack Obama congratulated the shuttle Discovery's crew Thursday, praising the orbiter for a "critical and iconic" final flight to the International Space Station. NASA, meanwhile, extended the shuttle's flight a second day. Read More...

Realtime coverage of STS-133 EVA No. 2

Astronauts Alvin Drew and Stephen Bowen carried out a six-hour 14-minute spacewalk Wednesday to perform a variety of maintenance chores outside the International Space Station (realtime coverage). Read More...

Astronauts prepare for second spacewalk

Astronauts Alvin Drew and Stephen Bowen plan to carry out a variety of maintenance chores outside the International Space Station during a planned 6.5-hour spacewalk. Read More...

Russians rule out Soyuz fly around of space station

Russian mission managers rejected a NASA proposal for a Soyuz fly-around of the International Space Station to capture unprecedented views of the lab complex with the shuttle Discovery and a variety of other vehicles attached. Read More...

Final U.S. module attached to space station (UPDATED)

The Discovery astronauts attached a final U.S. module to the International Space Station Tusday, providing lab crews with needed storage space. Read More...

NASA managers extend shuttle Discovery's mission by one day (UPDATED)

NASA managers Monday decided to extend the shuttle Discovery's space station resupply mission by one day to give the combined crews more time to outfit a new U.S. module and, possibly, to stage an out-of-this-world photo op. Read More...

Realtime coverage of STS-133 EVA No. 1

Astronauts Alvin Drew and Stephen Bowen completed a "textbook" six-hour 34-minute spacewalk Monday, installing a backup power cable, stowing a failed coolant pump and carrying out a variety of maintenance tasks. Read More...

Shuttle Endeavour moved to assembly building for March 10 rollout to pad

Shuttle Endeavour was hauled from its processing hangar to the Vehicle Assembly Building Monday for attachment to an external tank and solid-fuel boosters. The shuttle's 25th and final launch is targeted for April 19. Read More...

Discovery astronauts set for first spacewalk (preview)

Astronauts Alvin Drew and Stephen Bowen plan to install a backup electrical cable between two space station modules, store a failed ammonia pump module and perform general maintenance during a planned 6.5-hour spacewalk. Read More...

Discovery astronauts prep for spacewalk; heat shield in good shape

Discovery's crew worked through a busy day of robotics and equipment transfers Sunday and geared up for a spacewalk Monday. NASA's Mission Management Team, meanwhile, says the ship's heat shield appears to be in good shape. Read More...

Shuttle Discovery docks with the International Space Station (UPDATED)

The shuttle Discovery glided to a picture-perfect docking with the International Space Station Saturday, the orbiter's 13th and final linkup with the orbital outpost. Read More...

Shuttle managers assess launch debris; no damage expected

Foam debris that fell from the shuttle Discovery's external tank during launch Thursday was the result of an understood phenomenon and happened well after the timeframe when debris impacts pose a threat to the shuttle's heat shield, a senior NASA manager said Thursday. Read More...

Shuttle crew works through wing, nose cap inspections; rendezvous preps (UPDATED)

The Discovery astronauts are working through a routine but busy day in space, highlighted by inspections of the shuttle's nose cap and wing leading edge panels, along with preparations for docking with the space station Saturday (Updated at 12:40 p.m. EST). Read More...

Shuttle Discovery rockets into orbit (UPDATED)

The shuttle Discovery blasted off on its 39th and final mission Thursday, taking off with seconds to spare after a last-minute Air Force computer glitch threatened to derail the launch. Read More...

Realtime coverage of STS-133 launch countdown (UPDATED)

The shuttle Discovery's crew began strapping in shortly after 1:30 p.m. EST to await launch on the ship's 39th and final mission. There are no technical problems of any significance and forecasters expect good weather for launch at 4:50:27 p.m. Read More...

European cargo ship successfully docks with space station

The European Space Agency's second Automated Transfer Vehicle, loaded with more than seven tons of supplies and equipment, successfully docked with the International Space Station Thursday after an automated approach. Read More...

NASA managers 'go' for repaired shuttle Discovery's final launch

The shuttle Discovery is on track for blastoff Thursday on its 39th and final mission, a space station resupply flight that features two spacewalks and a final U.S. station module. Read More...

Shuttle countdown proceeding smoothly

The shuttle Discovery's countdown is proceeding smoothly toward launch Thursday on a space station resupply mission. There are no technical problems of any significance and good weather is expected. Read More...

STS-133 mission preview (UPDATED)

Running three-and-a-half months late, the repaired shuttle Discovery is poised for launch on its 39th and final mission to deliver supplies, spare parts and a final U.S. module to the International Space Station. Read More...

Shuttle Discovery's countdown begins

Engineers at the Kennedy Space Center restarted the shuttle Discovery's countdown Monday, setting the stage for launch Thursday on a long-delayed space station assembly flight. Read More...

Discovery crew flies to Florida to prep for launch

The shuttle Discovery's five-man one-woman crew flew to the Kennedy Space Center Sunday to prepare for blastoff Thursday on a space station resupply mission. Read More...

Shuttle Discovery cleared for Feb. 24 launch

Senior NASA managers attending a flight readiness review Friday at the Kennedy Space Center unanimously cleared the shuttle Discovery for launch Feb. 24 on a long-delayed space station resupply mission. Read More...

Ariane 5 rocket launches European cargo ship on station resupply mission

A powerful Ariane 5 rocket successfully boosted a European Space Agency cargo ship into orbit Wednesday on a flight to deliver more than seven tons of supplies to the International Space Station. Read More...

Realtime coverage of Russian EVA-28

Realtime coverage of Russian EVA-28 (space station maintenance; experiment installation/retrieval) Read More...

Launch of European cargo ship delayed at least 24 hours

Launch of a European Space Agency cargo ship bound for the International Space Station was delayed at least 24 hours Tuesday by a last-minute technical snag. The delay could impact the shuttle Discovery's Feb. 24 launch target.
Read More...

NASA unveiils FY 2012 budget

Faced with reduced funding and an uncertain outlook, NASA's $18.7 billion fiscal 2012 budget prioritizes the Obama administration's major goals and objectives but leaves unclear when post-shuttle manned spacecraft might fly. Read More...

NASA proposes Soyuz photo op; shuttle launch readiness reviewed (UPDATED)

Program managers met Friday to review the shuttle Discovery's readiness for launch Feb. 24. Russian managers have been asked to consider a Soyuz fly-around to photograph the station with the shuttle and other spacecraft attached. Read More...

Kelly rejoins Endeavour crew for April flight to space station (UPDATED)

Astronaut Mark Kelly will resume training to command the shuttle Endeavour for its final flight in April, rejoining his crewmates one month after a Tucson shooting spree that left his wife, Rep. Gabrielle Giffords, critically injured. Read More...

Shuttle Discovery hauled back to launch pad after external tank repairs

With repairs to its external tank complete, engineers the shuttle Discovery was hauled back to launch pad 39A overnight Monday for work to prepare the ship for a delayed blastoff on a space station resupply mission (UPDATED). Read More...

Russian Progress supply ship docks with space station

An unmanned Russian Progress supply ship loaded with 6,000 pounds of equipment and supplies docked with the International Space Station Saturday, two days after launch from the Baikonur Cosmodrome in Kazakhstan. Read More...

Station crew captures Japanese HTV-2 cargo ship (UPDATED)

A Japanese cargo ship carrying 8,500 pounds of cargo and supplies was plucked out of open space by the International Space Station's robot arm Thursday to complete smooth automated rendezvous. Read More...

Japanese HTV-2 cargo ship rockets into orbit, sets off after space station

An unmanned cargo craft carrying nearly 8.500 pounds of critical equipment and supplies blasted off from southern Japan Saturday, rocketing smoothly into orbit and setting off after the International Space Station. Read More...

Realtime coverage of Russian EVA-27

Realtime coverage of Russian EVA-27 (space station maintenance) Read More...

Bowen replaces Kopra on Discovery crew; launch still on for Feb. 24 (UPDATED)

Astronaut Stephen Bowen, a veteran spacewalker who flew on the most recent shuttle mission last May, will replace Timothy Kopra aboard the shuttle Discovery for its upcoming flight. Kopra was injured in a bicycle mishap last Saturday. Read More...

Astronaut Tim Kopra, member of next shuttle crew, injured in bike mishap

Astronaut Timothy Kopra, scheduled for launch aboard the shuttle Discovery Feb. 24, was injured Saturday in a bicycle accident, officials said. Details were not released, but officials said "there could be an impact to his mission duties." Read More...

Sturckow will replace Kelly in near-term training for April shuttle flight (UPDATED)

Veteran shuttle commander Frederick Sturckow will replace Mark Kelly in near-term training for an April shuttle flight, allowing Kelly to remain with wife Gabrielle Giffords as she recovers from a gunshot wound to the head. Read More...

Space Adventures plans additional trips to space station

The Russian space agency and the Rocket Space Corporation Energia have agreed to build additional Soyuz spacecraft to carry paying customers to the International Space Station starting in 2013 in a deal arranged by Space Adventures.
Read More...

NASA zeroes in on root cause of shuttle tank cracks

Engineers believe they have zeroed in on the root cause of cracks in the shuttle Discovery's external tank. A relatively simple modification should resolve the problem once and for all, officials say, setting the stage for another launch attempt Feb. 24.
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Russian prime minister calls space station, offers sympathy for Giffords shooting

Russian Prime Minister Vladimir Putin called the International Space Station Tuesday and expressed his sympathy to commander Scott Kelly over the shooting of Rep. Gabrielle Giffords, wife of Kelly's twin brother Mark. Read More...

NASA managers order 'radius block' stiffeners for all external tank stringers

NASA managers decide to install radius block stiffeners on all the structural ribs, or stringers, making up the intertank section of the shuttle Discovery's external tank to make them less susceptible to cracks during fueling and launch. Read More...

Rep. Gabrielle Giffords, wife of shuttle commander Mark Kelly, shot in Tucson

Rep. Gabrielle Giffords, D-Arizona, wife of shuttle commander Mark Kelly, was shot in the head during a public meeting in Tucson Saturday. A doctor at the University of Arizona trauma center said Giffords was expected to survive. Read More...

NASA rules out early February launch for shuttle Discovery

NASA managers Thursday ruled out an attempt to launch the shuttle Discovery in early February, giving engineers more time to assess repairs and failure scenarios in the wake of external tank cracks discovered after a Nov. 5 launch attempt. Read More...

Engineers consider beefing up all external tank 'stringers'

NASA managers order repairs for recently discovered cracks in shuttle Discovery's external tank and consider additional modifications to beef up all remaining structural ribs, or stringers, in the intertank section of the tank. Read More...

More cracks found in Discovery's external tank (UPDATED)

Engineers have found four more small cracks in the shuttle Discovery's external tank. NASA managers are considering installation of additional doublers to beef up ribs, or stringers, that experience the most stress during launch. Read More...

Discovery hauled back to VAB; tank inspections, possible modifications on tap

The shuttle Discovery was hauled off the pad and back to the Vehicle Assembly Building for additional inspections and possible external tank modifications. Launch remains on hold until at least Feb. 3. Read More...

Soyuz TMA-20 docks with International Space Station (UPDATED)

The Russian Soyuz TMA-20 spacecraft, carrying Dmitry Kondratyev, Italian flight engineer Paolo Nespoli and NASA astronaut Catherine Coleman, docked with the International Space Station Friday, boosting the lab's full-time crew back to six (UPDATED at 6:55 p.m. EST with hatch opening). Read More...

Realtime coverage of shuttle fueling test

Realtime coverage of a planned seven-and-a-half-hour fueling test to verify the structural integrity and safety margins of the shuttle Discovery's external tank (UPDATED at 3 p.m. EST; fueling test complete; no obvious problems). Read More...

Shuttle fueling test on tap Friday

The shuttle Discovery's external tank will be loaded with liquid oxygen and hydrogen rocket fuel Friday to collect data needed to assess the tank's structural integrity in the wake of cracked ribs, or stringers, found after a Nov. 5 launch attempt.
Read More...

Soyuz blasts off with three crew members bound for space station

A Russian Soyuz rocket blasted off from the Baikonur Cosmodrome in Kazakhstan Wednesday (U.S. time) carrying three crew members bound for the International Space Station. Docking is expected Friday. Read More...

NASA gears up for instrumented shuttle tanking test

NASA is gearing up for an instrumented fueling test Friday, weather permitting, to collect critical data about the structural integrity of the shuttle Discovery's external tank. After the test, the shuttle will be hauled back to the Vehicle Assembly Building for additional inspections before another launch try as early as Feb. 3. Read More...

SpaceX hails 'mind-blowingly awesome' test flight

The maiden orbital flight of the SpaceX Dragon cargo carrier met virtually all of the company's objectives, demonstrating an ability to maneuver to the International Space Station and making a pinpoint splashdown in a first for a commercial rocket program (REPOSTING original story to correct duplicate filing/time stamp problem). Read More...

SpaceX Falcon 9 set for first NASA demonstration flight

After cutting away two cracks in a second stage engine nozzle extension, SpaceX engineers late Tuesday pressed ahead with work to ready a Falcon 9 rocket for launch Wednesday on a long-awaited NASA-sponsored demonstration flight. Read More...

SpaceX test fires Falcon 9 first-stage engines in key pre-launch milestone (UPDATED)

After two last-second aborts, SpaceX test fired the first-stage engines of the company's Falcon 9 cargo rocket Saturday, setting the stage for launch next week on a NASA-sponsored demonstration flight. Read More...

Shuttle launch delayed to at least Feb. 3 for additional tests, crack analysis

Launch of shuttle Discovery on a space station resupply mission will be delayed until at least Feb. 3, NASA announced Friday, to give engineers more time to conduct tests to determine the root cause of cracks in the ship's external tank. Read More...

Root cause of shuttle external tank cracks still not clear

The root cause of unexpected cracks in the shuttle Discovery's external tank is still not understood, engineers said Thursday, a critical stumbling block for developing the necessary 'flight rationale' for another launch attempt this month. Read More...

Realtime coverage of Soyuz TMA-19 entry and landing

Realtime coverage of the Soyuz TMA-19 entry and landing in Kazakhstan (UPATED at 11:50 PM EST with landing). Read More...

Shuttle launch delayed to at least Dec. 17

NASA managers reviewing repairs to the shuttle Discovery's external tank and the rationale for making another launch attempt decided Wednesday to delay the flight to at least Dec. 17 and possibly longer (UPDATED at 5 PM EST with news conference). Read More...

Shuttle Discovery's launch on hold until at least Dec. 3 (UPDATED)

Launch of the shuttle Discovery on a space station resupply mission is on hold until at least Dec. 3 to give engineers more time to assess external tank crack repairs and to develop the necessary flight rationale, NASA announced Thursday (UPDATED at 9 p.m. with management comments on 'schedule pressure'). Read More...

Tank repairs in work while shuttle engineers assess 'fight rationale'

Engineers are pressing ahead with work to repair the shuttle Discovery's external tank amid an ongoing analysis to develop "flight rationale," or technical justification, for proceeding with another launch attempt. A decision is expected Monday. Read More...

Realtime coverage of Russian EVA-26

Realtime coverage of Russian EVA-26 (space station maintenance). Read More...

Fourth crack found in external tank 'stringer' (UPDATED)

Engineers have found a fourth crack in the structural ribs, or stringers, making up the central intertank compartment between the liquid oxygen and hydrogen sections of the shuttle Discovery's external tank. Repair plans are under review (UPDATED with vent line status). Read More...

Second cracked stringer found on Discovery's external tank (UPDATED)

Engineers have discovered another crack on an adjacent stringer in the shuttle Discovery's external tank, officials say (UPDATED at 8:40 PM with NASA statement, additional details). Read More...

Leaking vent line attachment disassembled, apparent seal problem found (UPDATED)

Engineers disassembled a leaking hydrogen vent line attachment fitting on the side of Discovery's external tank overnight, revealing an unevenly compressed internal seal (UPDATED at 12:25 PM with NASA statement, new photos). Read More...

Cracks found in 'stringer' under damaged foam; repair options assessed

Engineers removed foam insulation from the area of a crack on the side of the shuttle Discovery's external tank and found a corresponding crack in an underlying structural stringer. Troubleshooters are hopeful the damage can be fixed at the pad. Read More...

Engineers begin disassembly of leaky shuttle vent line fitting

Engineers started work Tuesday to disassemble a leaking hydrogen vent line fitting on the side of the shuttle Discovery's external tank amid troubleshooting to figure out what caused a long crack in the foam insulation of the ship's external tank (UPDATED at 9:25 PM EDT with foam dissecton). Read More...

Engineers mull shuttle repair options

Engineers geared up Monday to begin inspections and disassembly of a leaking 7-inch hydrogen vent line attached to the shuttle Discovery's external tank amid work to assess what might be needed to fix cracks in the tank's insulation. Read More...

Shuttle Discovery grounded by hyrdrogen leak; foam crack also seen

The shuttle Discovery, grounded by a gaseous hydrogen leak and a crack in fuel tank insulation, will not be ready for another launch try before Nov. 30. And that assumes engineers can carry out repairs at the launch pad. Read More...

Realtime coverage of STS-133 launch countdown

Launch of the shuttle Discovery on a space station resupply mission, the orbiter's 39th and final flight, has been delayed until at least Nov. 30 because of a hydrogen leak in a vent line. Engineers also are assessing apparent cracks in the insulation of the external tank. Read More...

Stormy weather prompts 24-hour launch delay (UPDATED)

NASA's Mission Management Team decided to delay launch of the shuttle Discovery another 24 hours, to Friday at 3:04:01 p.m., because of low clouds and rain over the Kennedy Space Center Thursday (Updated with flight plan milestones). Read More...

Shuttle Discovery cleared for Thursday launch attempt (UPDATED)

NASA's mission management team cleared the shuttle Discovery for launch Thursday, weather permitting, after concluding an electrical glitch Tuesday posed no credible safety threat. Liftoff is targeted for 3:29:43 p.m. EDT. Read More...

Engineers troubleshoot shuttle electrical glitch (UPDATED)

Engineers troubleshoot apparent glitch in shuttle engine controller circuitry; launch delayed at least 24 hours (UPDATED at 8 PM EDT with news conference). Read More...

NASA marks 10th anniversary of space station habitation

NASA marks the 10th anniversary of continuous human presence aboard the International Space Station, a milestone that was achieved early Tuesday after 57,361 orbits and 1.5 billion miles in low-Earth orbit. Read More...

STS-133 Mission Preview

The shuttle DIscovery's final voyage is a critical mission for the International Space Station as NASA retires the shuttle fleet and transitions to a new model for resupplying the lab and supporting a full-time crew of six (mission preview). Read More...

Discovery in good shape for launch; forecasters monitor weather

NASA's Mission Management Team met Monday and unanimously agreed to press ahead with plans to launch the shuttle Discovery Wednesday, weather permitting, on a space station assembly flight. Read More...

Shuttle repairs complete, NASA aims for Wednesday launch (UPDATED)

Engineers completed repairs and retest of suspect fittings in one of the shuttle Discovery's aft rocket pods Sunday, clearing the way for the start of the ship's countdown to launch Wednesday (UPDATED at 2:15 PM EDT with start of countdown). Read More...

Cosmonaut takes manual control, docks unmanned cargo ship

Cosmonaut Alexander Kaleri took over manual control to guide an unmanned Progress supply ship to a smooth docking with the International Space Station Saturday after an automated approach was called off. Read More...

Shuttle launch delayed to Wednesday (UPDATED)

Engineers have replaced suspect fittings in the shuttle Discovery's right-side orbital maneuvering system rocket pod, but testing and other work have delayed launch another day to Wednesday (UPDATED at 11:10 a.m. EDT with news briefing). Read More...

Shuttle managers optimistic about leak repair, Tuesday launch

NASA managers are optimistic leaky quick-disconnect fittings in the shuttle Discovery's right-side maneuvering system rocket pod can be repaired in time for a day-late launching Tuesday. Read More...

Discovery astronauts fly to Florida spaceport to prepare for launch

The shuttle Discovery's crew flew to the Kennedy Space Center Thursday to prepare for launch Monday on a mission to resupply the International Space Station. Read More...

Russian Progress supply ship blasts off on space station mission (UPDATED)

An unmanned Russian Progress supply ship blasted off from the Baikonur Cosmodrome in Kazakhstan Wednesday and set off after the International Space Station. Docking is expected Saturday. Read More...

Space station debris avoidance maneuver carried out

The International Space Station's orbit was adjusted slightly early Tuesday to preclude a close encounter with an out-of-commission NASA satellite. Read More...

Repairs complete, shuttle Discovery cleared for Nov. 1 launch (UPDATED)

After reviewing weekend work to fix a small fuel leak, NASA managers attending a flight readiness review Monday cleared the shuttle Discovery for launch Nov. 1 on a space station resupply mission (UPDATED at 5:00 PM EDT with news conference; quotes and details). Read More...

Fuel line seals replaced in shuttle Discovery (UPDATED)

Engineers replaced two seals in a suspect fuel-line flange aboard the shuttle Discovery Saturday in a bid to resolve an on-again, off-gain leak and keep the ship on track for launch Nov. 1 on a space station resupply mission. Read More...

NASA managers optimistic seal replacement will eliminate shuttle fuel leak

Engineers drain propellant from the shuttle Discovery's maneuvering rocket system before beginning weekend work to replace seals in a suspect flange (UPDATED at 7:30 AM 10/22/10 with fuel offload). Read More...

Engineers troubleshoot propellant leak aboard shuttle Discovery (UPDATED)

Engineers are troubleshooting a small fuel leak in the shuttle Discovery's orbital maneuvering system plumbing. NASA managers are hopeful the problem can be resolved in time for a planned Nov. 1 launch (UPDATED at 5:10 PM EDT with decision to replace seals). Read More...

Discovery crew reviews emergency procedures, straps in for practice countdown

The shuttle Discovery's crew strapped in for a dress-rehearsal countdown Friday that sets the stage for launch Nov. 1 on a space station assembly mission. It will be Discovery's 39th and final flight. Read More...

President Obama signs NASA budget authorization

President Obama signed NASA's budget authorization Monday, setting the stage for debate on funding details during a 'tough' appropriations process. Read More...

Soyuz TMA-01M docks with International Space Station (UPDATED)

A Soyuz spacecraft carrying two Russian cosmonauts and a veteran shuttle commander docked with the International Space Station Saturday evening after a two-day orbital chase, boosting the lab's crew back to six. Read More...

Realtime coverage of Soyuz TMA-01M launch

Realtime coverage of the Soyuz TMA-01M launch from the Baikonur Cosmodrome in Kazakhstan (Updated at 7:35 p.m. EDT with Soyuz launch). Read More...

Soyuz TMA-01M spacecraft moved to launch pad (UPDATED)

The Soyuz TMA-01M spacecraft was moved to the launch pad for for liftoff Thursday evening (U.S. time) from the Baikonur Cosmodrome in Kazakhstan (posting countdown and launch-to-docking timeline). Read More...

STS-134, ATV-2 launch dates modified

The European Space Agency has rescheduled the launch of an unmanned space station cargo ship for Feb. 15, setting up a docking Feb. 26. NASA, in turn, has delayed launch of the shuttle Endeavour by one day to Feb. 27. Read More...

Realtime coverage of Soyuz TMA-18 entry and landing

Realtime coverage of Soyuz TMA-18 entry and landing in Kazakhstan (updated 09/27 with on-site landing pictures) Read More...

Change of command ceremony sets stage for Soyuz landing Friday

Expedition 24 commander Alexander Skvortsov handed over control of the International Space Station to Douglas Wheelock Wednesday in a ceremony that sets the stage for the return to Earth of Skvortsov and two crewmates early Friday.
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Shuttle Discovery hauled to launch pad for final flight (UPDATED)

The shuttle Discovery was hauled to the launch pad overnight Monday for work to ready the ship for blastoff Nov. 1 on a space station resupply flight, its 39th and final mission. Read More...

Boeing, Space Adventures announce plans for commercial space launch

Space Adventures Ltd. will work with Boeing to launch wealthy tourists and other non-NASA fliers aboard a capsule under development by the U.S. aerospace giant. Read More...

Final shuttle crew named for possible station flight

NASA names four astronauts to train for a possible rescue mission aboard the shuttle Atlantis to back up the crew of a February mission. If funding is approved, NASA hopes to launch Atlantis on an actual space station resupply fight. Read More...

Progress cargo ship docks with International Space Station

An unmanned Russian Progress supply ship carrying two-and-a-half tons of supplies and equipment docked with the International Space Station early Sunday after a smooth automated rendezvous. Read More...

Shuttle Discovery bolted to external tank; roll out stays on schedule

Engineers repositioned a wayward nut and finished bolting the shuttle Discovery to its external fuel tank early Saturday. Roll out to pad 39A remains on track for Sept. 20. Read More...

Progress supply ship launched to space station (UPDATED)

An unmanned Russian Progress supply ship carrying more than 5,000 pounds of supplies and equipment was launched from the Baikonur Cosmodrome Friday. Docking with the International Space Station is expected early Sunday. Read More...

Space Shuttle Discovery, facing final flight, moved to VAB (UPDATED)

The shuttle Discovery was hauled to the Vehicle Assembly Building Thursday for attachment to an external tank and boosters. If all goes well, the orbiter will be hauled to launch pad 39A Sept. 20 for blastoff Nov. 1 on its final mission.
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Water line breaks; space center closed; shuttle rollover delayed pending repairs

A water line break forces NASA to close the Kennedy Space Center, delaying the shuttle Discovery's move to the Vehicle Assembly Building for attachment to an external tank and solid-fuel boosters. Read More...

Possible June shuttle flight could be 'in limbo' until end of year

NASA shuttle managers are keeping options open while awaiting a decision, possibly as late as the end of the year or early January, on whether to mount an additional shuttle flight next June. Read More...

Follow-up ISS spacewalk tasks deferred to November shuttle mission

Assessing follow-up work needed in the wake of a coolant pump replacement aboard the International Space Station, NASA managers decided this week to defer additional spacewalk tasks to the crew of a November shuttle flight. Read More...

NASA considering June 28, 2011, for possible rescue/resupply shuttle flight

If NASA wins political approval for one additional space shuttle mission, the agency is protectively considering a June 28, 2011, target launch date. Read More...

Station coolant loop back on line; astronauts discuss repair work

The International Space Station's coolant system is back up and running normally after a three-spacewalk repair job. The lab's U.S. astronauts discussed the repair work in an interview with CBS News. Read More...

Study suggests astronauts need better exercise

A new study shows that astronauts on long-duration spaceflights experience significant muscle wasting and a surprising loss of force, suggesting new exercise techniques are needed to keep crews fit. Read More...

Astronauts wrap up successful repair EVA (UPDATED)

Astronauts Douglas Wheelock and Tracy Caldwell Dyson wrap up a seven-hour 20-minute spacewalk to install a replacement coolant pump aboard the International Space Station. Read More...

Realtime Coverage of U.S. EVA-17

Realtime coverage of U.S. EVA-17 (loop A ammonia pump R & R part 3) Read More...

Astronauts cleared for third coolant system repair EVA

Astronauts Douglas Wheelock and Tracy Caldwell Dyson prepare for a third spacewalk Monday to install a replacement ammonia pump in a bid to complete coolant system repairs. Read More...

Third coolant repair EVA on tap Monday; fourth EVA likely

NASA delays third coolant repair spacewalk to Monday; officials say fourth spacewalk likely to tie up loose ends and move faulty ammonia pump to more secure stowage location. Read More...

Realtime Coverage of U.S. EVA-16

Realtime coverage of U.S. EVA-16 (loop A ammonia pump R & R part 2) Read More...

Astronauts cleared for second ISS repair spacewalk

NASA managers have approved plans for a second spacewalk Wednesday to isolate a leaking ammonia line, allowing astronauts to remove a faulty pump module crippling the lab's coolant system. A third spacewalk will be needed Sunday to complete the repair. Read More...

NASA revises plan for second ISS repair spacewalk

NASA planners are revising plans for a second ISS coolant system repair spacewalk Wednesday to deal with an unexpected ammonia leak. A third spacewalk is expected Sunday, pending management approval, to finish the job. Read More...

Ammonia leak, jammed connector derail coolant repair spacewalk

An unexpected ammonia leak and a jammed quick-disconnect fitting derailed plans to swap out a faulty pump module aboard the International Space Station during a spacewalk Saturday. Read More...

Realtime Coverage of U.S. EVA-15

Realtime coverage of U.S. EVA-15 (loop A ammonia pump R & R part 1) Read More...

Astronauts set for pump replacement spacewalk

Astronauts Douglas Wheelock and Tracy Caldwell Dyson make final preparations for a spacewalk Saturday to replace a coolant pump on the International Space Station. Read More...

Spacewalks delayed to Saturday, Wednesday

NASA managers decided Thursday to delay two upcoming space station coolant system repair spacewalks to improve planning and procedures. The EVAs now are targeted for Saturday and Wednesday. Read More...

Preliminary timeline for pump replacement spacewalk (EVA-1)

Here is a preliminary timeline for a planned spacewalk Friday to replace a failed ammonia pump module in the International Space Station's cooling system. Read More...

NASA refines spacewalk plans for cooling pump changeout (UPDATED)

NASA astronauts and engineers are refining plans for two spacewalks to replace a large ammonia pump module that shut down Saturday, knocking out one of the lab's two cooling loops. Read More...

Coolant problem triggers powerdowns aboard ISS (UPDATED)

Space station astronauts, flight controllers troubleshoot cooling system problem. Read More...

Station controllers monitor threatening Fengyun 1C debris (UPDATED)

After multiple radar tracking passes, space station flight controllers concluded a piece of debris from a deliberately destroyed Chinese satellite would not pass close enough to require any crew action. Read More...

Realtime coverage of Russian EVA-25

Realtime coverage of Russian EVA-25 Read More...

Cosmonauts gear up for spacewalk

Cosmonauts Mikhail Kornienko and Fyodor Yurchikhin are gearing up for a planned six-hour spacewalk overnight Monday. Read More...

House committee joins Senate in proposing additional shuttle flight

A House committee, reviewing its version of NASA's $19 billion 2011 funding package, approved an amendment calling for an additional shuttle flight next summer to deliver supplies and equipment to the International Space Station.
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Progress 38 successfully docks with ISS

An unmanned Russian supply ship successfully docked with the International Space Station Sunday, two days after an interference issue with a television transmitter in a backup docking system triggered an unexpected abort Friday. Read More...

Interference blamed for Progress docking abort (UPDATED 7/4/10)

Russian engineers believe electrical interference caused an approaching unmanned Progress supply ship to abort its approach to the International Space Station Friday Read More...

Progress docking aborted

The automated approach of an unmanned Russian Progress supply ship to the International Space Station was aborted today when telemetry between the spacecraft and the Russian command module was lost. (UPDATED) Read More...

Shuttle launch dates reset

NASA managers Thursday formally retargeted the program's final two missions for launches Nov. 1 and Feb. 26. Read More...

Progress supply ship launched to station

An unmanned Russian Progress supply ship was successfully launched Wednesday from the Baikonur Cosmodrome in Kazakhstan. Read More...

Soyuz TMA-19 moved to new Russian port

Cosmonaut Fyodor Yurchikhin, flight engineer Shannon Walker and Douglas Wheelock strapped into the Soyuz TMA-19 spacecraft that carried them into orbit earlier this month, undocked from the Zvezda command module's aft port and redocked at the new Russian Rassvet module.
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Soyuz TMA-19 docks with space station

Completing a two-day orbital rendezvous, a Russian Soyuz spacecraft carrying a veteran cosmonaut and two NASA astronauts docked with the International Space Station's aft port Thursday, boosting the lab's crew back to six.
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Soyuz TMA-19 blasts off

Lighting up the pre-dawn Kazakhstan sky, a Russian Soyuz rocket carrying a veteran Russian cosmonaut and two NASA astronauts roared to life and vaulted into orbit Tuesday, kicking off a two-day flight to the International Space Station.
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Soyuz TMA-17 lands in Kazakhstan

The Soyuz TMA-17 crew capsule, carrying outgoing space station commander Oleg Kotov, Timothy Creamer and Soichi Noguchi, settled to a safe parachute-and-rocket-assisted landing in Kazakhstan Tuesday after a descent from the International Space Station.
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Soyuz TMA-17 undocks from station

The Russian Soyuz TMA-17 spacecraft, carrying outgoing Expedition 23 commander Oleg Kotov, Timothy Creamer and Soichi Noguchi, undocked from the International Space Station Tuesday evening, setting the stage for landing in Kazakhstan to close out a five-and-a-half-month mission.
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Kotov, Creamer, Noguchi prepare for landing

Outgoing space station commander Oleg Kotov, NASA flight engineer Timothy Creamer and Japanese astronaut Soichi Noguchi floated into their Soyuz TMA-17 spacecraft Tuesday afternoon, closed the hatch and readied the ship for for undocking and landing in Kazakhstan to close out a 163-day stay in space.
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Shuttle Atlantis returns to Earth

The shuttle Atlantis closed out its 32nd and final planned mission with a smooth Florida landing Wednesday, wrapping up a quarter century of service with a successful space station assembly mission.
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Shuttle cargo bay doors closed

After resolving an issue with the shuttle's re-entry cooling system, the Atlantis astronauts closed the ship's payload bay doors just before 5:30 a.m. EDT. The crew is setting up for a deorbit rocket firing around 7:42 a.m. and a landing at the Kennedy Space Center at 8:48 a.m.
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Atlantis crew preps for entry

Keeping tabs on the weather, the Atlantis astronauts are preparing for re-entry and landing today at the Kennedy Space Center to close out the shuttle's 32nd and final flight.
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