International Space Station

Station crew captures Dragon cargo ship

A SpaceX Dragon cargo ship loaded with more than two tons of equipment and supplies rendezvoused with the International Space Station early Friday and was captured by Italian astronaut Samantha Cristoforetti, using the lab's robot arm, to wrap up a smooth three-day rendezvous.
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SpaceX launches ISS cargo flight; booster landing try fails

A SpaceX Falcon 9 rocket boosted a Dragon cargo ship into orbit Tuesday on a three-day flight to the International Space Station, but an attempt to land the booster’s first stage on an off-shore barge was not successful. Read More...

SpaceX ISS cargo flight grounded by bad weather

Electrically active anvil clouds approaching the Cape Canaveral Air Force Station Monday forced SpaceX to order a 24-hour delay for launch of a Falcon 9 rocket carrying a Dragon cargo ship bound for the International Space Station.
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Kelly, Kornienko settle in for marathon mission

Settling in aboard the International Space Station for a marathon 342-day stay in orbit, astronaut Scott Kelly says he's taking life in space "one day at a time," adding he plans to work at a slightly slower pace to maintain an even keel. Read More...

NASA has high hopes for one-year station mission

A workhorse Soyuz booster thundered to life and climbed into a dark Kazakh sky Friday, carrying NASA astronaut Scott Kelly and cosmonaut Mikhail Kornienko on a four-orbit voyage to the International Space Station to kick off a marathon 342-day mission, the longest flight ever attempted by an American.
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Kelly, Kornienko braced for launch on yearlong mission

Shuttle veteran Scott Kelly first heard about NASA's plans to send an astronaut to the International Space Station for nearly a full year shortly after he completed his third space flight in 2011, a 159-day stay aboard the orbital lab complex.
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Lockheed Martin unveils Jupiter cargo ship for ISS, exploration

Taking space station resupply to new heights, Lockheed Martin unveiled plans for an innovative modular spacecraft Thursday that could be used to deliver cargo to the lab complex or serve as a small habitat for NASA astronauts making deep space voyages aboard the agency's Orion capsules.
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Station trio returns to Earth after 167 days aloft

Three space station fliers -- the outgoing NASA commander and two Russian cosmonauts -- undocked and returned to Earth Wednesday, ending a 167-day stay in space with a nail-biting communications blackout that left the crew out of contact with Russian flight controllers during much of the trip home.
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Virts, Wilmore install antennas, wiring for commercial crew ships

Astronauts Terry Virts and space station commander Barry "Butch" Wilmore ventured back outside Sunday for their third spacewalk in eight days to complete initial preparations for upcoming dockings by Boeing and SpaceX crew capsules.
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Astronauts cleared for Sunday spacewalk

International Space Station managers Friday cleared astronauts Barry "Butch" Wilmore and Terry Virts to proceed with a third spacewalk Sunday after concluding a small amount of water in Virts' space helmet after an EVA Wednesday was an understood condition.
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Astronauts carry out second EVA to rig station for modifications

Astronauts Barry "Butch" Wilmore and Terry Virts carried out the second of three spacewalks to help ready the lab complex for dockings by commercial crew capsules. Back inside the station's airlock, Virts reported a small amount of water in his space helmet, but officials said he was never in any danger.
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Spacewalkers install cable for new docking adapters

Astronauts Barry "Butch" Wilmore and Terry Virts floated outside the International Space Station Saturday and installed wiring needed for two new docking mechanisms that will be attached later this year for use by Boeing and SpaceX crew capsules.
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ULA, Boeing break ground on LC-41 crew access tower

Boeing, United Launch Alliance, NASA and the Air Force broke ground Friday for construction of a 20-story-tall launch pad crew access tower that will be used by astronauts taking off atop ULA Atlas 5 rockets aboard Boeing's commercially developed CST-100 ferry craft starting in 2017.
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Spacewalks kick off major station modifications

NASA space station managers decided Thursday to delay the first two of three planned spacewalks by one day to give flight controllers and engineers a chance to catch their collective breath after exhaustive troubleshooting to verify the health of critical internal spacesuit components.
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Progress supply ship docks with space station

Six hours after launch from Kazakhstan Tuesday, a Russian Progress supply ship loaded with 3.1 tons of supplies and propellant completed a problem-free automated rendezvous with the International Space Station, gliding to a smooth docking 257 miles above the Atlantic Ocean. Read More...

High winds ground Falcon 9; Dragon splashes down on schedule

Launch of a SpaceX Falcon 9 rocket carrying a space weather satellite was scrubbed Tuesday by high winds aloft, but the company pressed ahead with recovery of a returning space station cargo ship. Read More...

NASA expects mixed crews aboard Soyuz, U.S. ferry ships

NASA hopes to begin launching U.S. and partner astronauts to the space station aboard Boeing and SpaceX ferry craft in the 2017 timeframe, but agency managers expect to continue sending crew members up aboard Russian Soyuz spacecraft.
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SpaceX, Boeing on track for 2017 piloted test flights

NASA expects to spend some $5 billion on commercial spacecraft to carry astronauts to and from the International Space Station, ending reliance on the Russians for crew ferry flights and eventually lowering the average cost per seat to around $58 million. Read More...

Computer glitch briefly triggers fears of ISS ammonia leak

Concern about a possible ammonia coolant leak early Wednesday prompted astronauts aboard the International Space Station to briefly evacuate the U.S. segment of the complex and join three cosmonauts in the Russian portion of the outpost. Read More...

SpaceX launches fifth station resupply flight

A SpaceX Falcon 9 rocket successfully boosted a space station cargo ship into orbit Saturday but an unprecedented attempt to land the rocket's first stage on a barge stationed off the coast of Florida was not successful. Read More...

SpaceX station resupply flight grounded by steering problem

Launch of a SpaceX Falcon 9 rocket carrying a Dragon cargo ship bound for the International Space Station was called off Tuesday because of apparent problems with the second stage engine steering system.
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SpaceX preps Dragon, Falcon 9 for station resupply flight

SpaceX engineers made final preparations Monday for the planned Tuesday launch of a Falcon 9 rocket carrying a Dragon cargo ship loaded with more than 5,200 pounds of supplies, equipment and science gear bound for the International Space Station. Read More...

ISS astronaut enjoy holidays, reflect on busy year ahead

Taking time off for the holidays, the crew of the International Space Station is preparing for a busy start to the new year, with the arrival of a SpaceX cargo ship next week and three U.S. spacewalks in February.
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Kelly, Kornienko eager for launch on one-year mission

NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko are gearing up for launch March 27 to kick off a record one-year stay aboard the International Space Station, an orbital marathon crucial for planning future flights beyond Earth. Read More...

Soyuz rockets into orbit, carries three to space station

Braving near-zero temperatures, a Russian Soyuz spacecraft carrying a crew of three vaulted into orbit Sunday and docked with the International Space Station six hours later. (UPDATED) Read More...

Soyuz TMA-13M carries three station fliers back to Earth

A veteran cosmonaut, a German volcanologist and a Navy test pilot-turned-astronaut whose mastery of social media earned him -- and NASA -- a global following, undocked from the International Space Station and returned to Earth Sunday after 165 days aloft.
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Orbital accelerates plan to re-engine Antares in wake of failure

Orbital Sciences is accelerating development of a replacement engine for its Antares rocket in the wake of a spectacular Oct. 28 launch disaster that apparently was triggered by the failure of a Russian-built first-stage engine.
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Station astronaut says commercial space 'next breakthrough'

Space station astronaut Reid Wiseman, preparing to return to Earth this weekend after 165 days in orbit, said Monday commercial spaceflight represents the "next breakthrough" in aerospace technology.
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Orbital Sciences assesses Antares failure

A day after an explosion that destroyed an Orbital Sciences Antares rocket carrying a space station cargo ship, company officials said Wednesday they hope to zero in on the likely cause of the mishap within a week or so. Read More...

Russian Progress supply ship takes off for station

Nine hours after a spectacular launch failure that destroyed a U.S. supply ship bound for the International Space Station, a Russian Progress cargo ship blasted off from Kazakhstan and successfully docked with the lab complex six hours later Read More...

Antares rocket explodes, destroys station cargo ship

An Orbital Sciences Antares rocket exploded seconds after launch from the Virginia coast Tuesday, erupting in a spectacular fireball and destroying an uncrewed Cygnus cargo ship in a disheartening failure for NASA's commercial space station resupply program.
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Russians stage smooth spacewalk

Two cosmonauts ventured outside the International Space Station Wednesday, jettisoning three no-longer-needed components and carrying out a photo survey of the Russian segment of the lab complex in the year's seventh and final ISS spacewalk. Read More...

Spacewalkers repair station electrical system

Astronauts Reid Wiseman and Barry "Butch" Wilmore floated outside the International Space Station Wednesday and, after a bit of trouble with a balky bolt, replaced a broken voltage regulator to restore the lab's electrical grid to normal operation.
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NASA clears Boeing, SpaceX to resume commercial crew work

Rescinding a work stoppage in the wake of a bid protest by losing competitor Sierra Nevada, NASA has told Boeing and SpaceX to resume work on commercial crew spacecraft to avoid possible delays ferrying astronauts to and from the space station. Read More...

Rookie astronauts chalk up smooth spacewalk

Astronauts Reid Wiseman and Alexander Gerst carried out a smooth six-hour 13-minute spacewalk Tuesday, moving a pump module to long-term storage and installing backup power gear for the space station's robot arm transporter. Read More...

Station spacewalks prelude to major changes

Two U.S. spacewalks this week and next will the stage for a complex series of eight to 10 NASA EVAs and module relocations next year that are needed to prepare the station for dockings by Boeing and SpaceX commercial crew ferry craft.
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NASA announces second round of commercial cargo contracts

In the wake of new contracts for commercial space taxis, NASA Friday announced a new competition for a second round of contracts to build and launch unpiloted spacecraft to deliver cargo and supplies to the International Space Station.
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Soyuz ferry craft blasts off, docks with space station

A Soyuz ferry craft carrying a crew of three docked with the International Space Station late Thursday. While one of the Soyuz capsule's two solar arrays did not deploy after launch, the crew had no problems completing a four-orbit rendezvous. Read More...

SpaceX cargo ship attached to space station

Two days after launch from Cape Canaveral, a SpaceX Dragon cargo ship loaded with 2.5 tons of equipment and supplies pulled up to the International Space Station early Tuesday and was captured by the lab's robot arm to complete a smooth rendezvous.
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SpaceX station resupply mission takes off

Running a day late because of stormy weather, a SpaceX cargo ship packed with more than 5,100 pounds of equipment and supplies blasted off early Sunday on a two-day flight to the International Space Station.
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SpaceX station resupply flight scrubbed by weather

Thick clouds and rain over central Florida early Saturday forced SpaceX to order a 24-hour delay for launch of a Falcon 9 rocket carrying a Dragon supply ship bound for the International Space Station.
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SpaceX readies cargo ship for flight to space station

A SpaceX Falcon 9 rocket stands poised to launch a Dragon cargo ship on a two-day flight to the International Space Station. Read More...

NASA IG questions space station cost projections

NASA cost estimates for operating the International Space Station through 2024 are "overly optimistic," the agency's inspector general reported Thursday, adding that the price of new U.S.-built space taxis likely will be higher than currently projected.
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Boeing, SpaceX share contracts to build commercial space taxis

Aerospace giant Boeing and newcomer SpaceX will share $6.8 billion in NASA contracts to build commercial space taxis to fly astronauts to and from the International Space Station. Read More...

Soyuz TMA-12M lands in Kazakhstan

Two Russian cosmonauts and a NASA astronaut strapped into a Soyuz ferry craft, undocked from the International Space Station and plunged back to Earth Wednesday, settling to a jarring rocket-assisted landing in Kazakhstan to close out a 169-day mission.
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Russians launched Peruvian nanosat during spacewalk

Space station cosmonauts Alexander Skvortsov and Oleg Artemyev began a planned six-hour and 15-minute spacewalk Monday, launching a small Peruvian science satellite before pressing ahead with experiment swap outs and maintenance. Read More...

Final ESA cargo ship docks at space station

The European Space Agency's fifth and final space station cargo ship glided to a smooth automated docking Tuesday after a flawless rendezvous, bringing 7.2 tons of supplies and equipment to the lab complex. Read More...

Ariane 5 boosts last ATV cargo ship into orbit

The fifth and final launch of the European Space Agency's fifth and final station-bound ATV cargo ship marks the end of an era as the agency shifts its focus to providing power and propulsion for NASA's Orion deep space exploration vehicle. (UPDATED) Read More...

Progress cargo ship blasts off, docks with space station

A Russian Progress cargo ship loaded with 2.8 tons of supplies and equipment blasted off from the Baikonur Cosmodrome in Kazakhstan Wednesday and docked with the International Space Station after a problem-free rendezvous. Read More...

Cygnus cargo ship berthed at station

A Cygnus cargo ship loaded with more than 1.5 tons of supplies and equipment was plucked out of open space by the International Space Station's robot arm early Wednesday and pulled in for berthing to wrap up a three-day rendezvous.
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Antares rocket boosts commercial Cygnus cargo ship into orbit

An Orbital Sciences Antares rocket carrying a Cygnus cargo capsule thundered away from the Virginia coast Sunday and streaked into orbit, kicking off a three-day flight to deliver more than 1.5 tons of supplies and equipment to the International Space Station.
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Antares rocket readied for launch on station resupply flight

After a string of delays cause by stormy weather, conflicts with other flights and an engine test failure, Orbital Sciences Corp. is readying an Antares rocket for launch Sunday to carry 1.7 tons of supplies and equipment to the International Space Station. Read More...

Realtime coverage of Russian EVA-38

Realtime coverage of Russian EVA-38 (antenna installation; experiment relocation) Read More...

SpaceX unveils futuristic crew ferry craft

With a showman's flair for the dramatic, rocket designer Elon Musk unveiled a futuristic space capsule Thursday, a sleek reusable ferry craft that could carry astronauts to the International Space Station and bring them home to a pinpoint, rocket-powered landing.
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Soyuz TMA-13M rockets into orbit, docks with space station

A Russian Soyuz spacecraft carrying a three-man crew blasted off from the Baikonur Cosmodrome in Kazakhstan Wednesday and docked with the International Space Station after a four-orbit rendezvous to boost the lab's crew back to six. (UPDATED) Read More...

Soyuz poised for launch to station

A veteran Russian cosmonaut, a U.S. Navy test pilot-turned-astronaut and a German volcanologist are set for a six-hour flight to the International Space Station Wednesday to boost the lab's crew back to six and kick off a busy summer of research and multiple EVAs. Read More...

Soyuz TMA-11M lands in Kazakhstan

A Japanese astronaut, a veteran Russian cosmonaut and a NASA flight engineer strapped into a Soyuz ferry craft, undocked from the International Space Station and fell back to Earth Tuesday to close out a 188-day stay in orbit. Read More...

Rogozin threatens engine restrictions, ISS lifetime extension

Russian-built RD-180 engines that power the first stage of United Launch Alliance's Atlas 5 rocket will no longer be sold for use in U.S. military missions, Dmitry Rogozin, Russia's deputy prime minister for space and defense, said Tuesday.
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SpaceX wins temporary injunction on ULA-Russian engine buys

The U.S. Court of Federal Appeals has issued a temporary injunction barring United Launch Alliance from purchasing Russian engines and hardware for its venerable Atlas 5 rocket following a complaint by SpaceX alleging such sales violate U.S. sanctions. Read More...

Realtime coverage of U.S. EVA-26

Realtime coverage of U.S. EVA-26 (MDM EXT-2 replacement). Read More...

Dragon cargo ship attached to space station

Wrapping up a smooth two-day rendezvous, a SpaceX Dragon cargo ship was successfully attached to the International Space Station early Sunday, bringing nearly 5,000 pounds of supplies and equipment to the lab complex.
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SpaceX Falcon 9 boost Dragon/CRS-3 into orbit (UPDATED)

A SpaceX Falcon 9 rocket boosted a Dragon cargo capsule into orbit Friday, the first step in a two-day rendezvous with the International Space Station, the company's third commercial resupply mission.
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SpaceX aims for second launch try Friday

SpaceX is pressing ahead for another attempt Friday to launch a Falcon 9 rocket carrying a commercial cargo craft bound for the International Space Station, setting up an Easter Sunday rendezvous and berthing.
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SpaceX Dragon cargo flight to station scrubbed (UPDATED)

Launch of a SpaceX Falcon 9 rocket carrying a Dragon cargo capsule bound for the International Space Station was scrubbed Monday because of an apparent first stage helium leak, delaying the flight until Friday at the earliest.
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NASA studies glitch with backup ISS computer (UPDATED)

SpaceX engineers are pressing ahead with work to prepare a Falcon 9 rocket for launch Monday to boost a space station cargo ship into orbit. But a final decision will depend on troubleshooting to resolve problems with a failed computer unit aboard the lab complex. Read More...

Progress supply ship docks with space station (UPDATED)

A Russian Progress supply ship loaded with 2.9 tons of supplies and equipment bound for the International Space Station blasted off and streaked into space Wednesday, docking with the International Space Station six hours later. Read More...

Space station exempt from ban on NASA-Russia contact

NASA has been told to suspend contact with Russian government officials because of Russia's "ongoing violation of Ukraine's sovereignty and territorial integrity," according to an agency memo circulated Wednesday. The International Space Station is exempt.
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Soyuz TMA-12M docks with space station

A Russian Soyuz spacecraft carrying two cosmonauts and a NASA astronaut glided to a smooth linkup with the International Space Station Thursday, two days after a technical snag blocked a fast-track rendezvous and docking shortly after launch Tuesday.
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Soyuz on track for revised two-day station rendezvous

After a glitch interrupted a planned four-orbit rendezvous with the International Space Station Tuesday, the Soyuz TMA-12M crew pressed ahead Wednesday with a two-day rendezvous. Read More...

Soyuz sets off after station; rendezvous snag delays docking

Two Russian cosmonauts and a NASA astronaut rocketed smoothly into space aboard a Soyuz ferry craft Tuesday, but the crew ran into problems executing a required rendezvous rocket firing, delaying docking with the International Space Station until Thursday at the earliest.
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SpaceX delays Falcon 9/Dragon launch to station

Launch of a SpaceX Falcon 9 rocket carrying a cargo ship bound for the International Space Station has been delayed to no earlier than March 30 because of what sources described as apparent contamination that could pose problems for station-bound research hardware. Read More...

Soyuz crew lands in Kazakhstan (UPDATED)

Despite strained relations over Russian actions in Ukraine, superpower cooperation in space continued unabated Monday with two cosmonauts and a NASA astronaut departing the International Space Station for a fiery plunge back to Earth late Monday. (UPDATED) Read More...

NASA vows to correct problems that led to dangerous EVA leak

A misunderstanding of how water behaves in a spacesuit operating in weightlessness, combined with institutional complacency and a perceived pressure to avoid delays, resulted in a frightening water leak during a 2013 spacewalk, a mishap board concluded. Read More...

Progress supply ship docks with space station

An unmanned Progress supply ship loaded with 2.8 tons of equipment and supplies rocketed into orbit Wednesday, chased down the International Space Station and glided to a smooth automated docking after a four-orbit rendezvous.
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Cameras re-installed in Russian spacewalk

Cosmonauts Oleg Kotov and Sergey Ryazanskiy re-installed two commercial cameras on the hull of the International Space Station Monday. Despite apparent signs of trouble with one camera, officials with Vancouver-based UrtheCast called the work a success. Read More...

Realtime coverage of Russian EVA-37A

Realtime coverage of Russian EVA-37A (UrtheCast camera installation; 2nd attempt) Read More...

Cygnus cargo ship berthed at space station

A commercial cargo ship loaded with nearly 1.5 tons of supplies and equipment was captured by the International Space Station's robot arm early Sunday and attached to a docking port, wrapping up a complex but problem-free two-and-a-half-day rendezvous.
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Orbital Sciences Antares rocket blasts off on station cargo flight

Delayed one day by cold weather and another day by concern about space radiation, an Orbital Sciences Corp. Antares rocket carrying a commercially developed cargo ship blasted off Thursday and set off after the International Space Station.
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Station cargo mission delayed one day by space weather

Launch of an Orbital Sciences Antares rocket carrying a Cygnus cargo ship bound for the International Space Station was scrubbed Wednesday because of high space radiation levels after a solar flare. Based on a detailed analysis, the flight was retargeted for Thursday.
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Space station gets go ahead for operations through at least 2024

The Obama administration has given NASA the go-ahead to operate the International Space Station through at least 2024, the agency says, allowing government and private-sector researchers to count on at least another decade of operations. Read More...

Realtime coverage of Russian EVA-37

Realtime coverage of Russian EVA-37 (UrtheCast camera installation; experiments) Read More...

Realtime coverage of U.S. EVA-25

Realtime coverage of U.S. EVA-25 (loop A ammonia pump module replacement). Read More...

Astronauts prep for second coolant repair spacewalk

Astronauts Rick Mastracchio and Mike Hopkins prepared their spacesuits Monday for a Christmas Eve spacewalk, their second in four days to complete an urgent cooling system repair job aboard the International Space Station's main power truss.
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Realtime coverage of U.S. EVA-24

Realtime coverage of U.S. EVA-24 (loop A ammonia pump module removal). Read More...

NASA confident spacesuits ready for cooling system repair work

Engineers are confident the spacesuits that will be used for two and possibly three excursions to repair the space station's coolant system are in good shape and that no problems with water leakage are expected. Read More...

NASA orders spacewalks to fix station coolant loop

After an exhaustive effort to come up with a fix for a balky valve in a space station coolant loop, NASA managers decided Tuesday to resolve the problem with two and possibly three spacewalks to replace a refrigerator-size ammonia pump module. Read More...

ISS managers mull coolant system repair options

Engineers are running tests to figure out what is affecting the operation of a critical valve inside a coolant pump aboard the International Space Station that has forced flight controllers to shut down non-essential systems, curtailing science operations. Read More...

Engineers troubleshoot station cooling problem

A valve in a coolant system pump module aboard the International Space Station apparently malfunctioned Wednesday, triggering cooling problems in one external ammonia loop and prompting flight controllers to power down non-essential equipment. Read More...

Russian Progress cargo ship docks with space station

Space station commander Oleg Kotov took over manual control of an approaching Progress supply ship Friday after an undisclosed problem and deftly guided the craft in for a smooth docking at the International Space Station's aft port. Read More...

International Space Station hits 15-year mark

Fifteen years ago, a Russian Proton rocket carrying the first module of what would become the International Space Station roared to life and climbed into orbit, kicking off one of the most complex -- and expensive -- engineering projects ever attempted. Read More...

Soyuz returns to Earth with three station fliers and Olympic torch

Three station fliers strapped into their Soyuz TMA-09M ferry craft and plunged back to Earth Sunday, settling to a jarring rocket-assisted landing on the frigid steppe of Kazakhstan to close out a 166-day stay in space. Read More...

Realtime coverage of Russian EVA 36

Realtime coverage of Russian spacewalk No. 36. Read More...

Cosmonauts set for Olympic torch spacewalk

Two Russian cosmonauts plan to carry an unlighted Olympic torch outside the International Space Station Saturday, staging a symbolic spacewalk relay as part of the build up to the 2014 Winter Games. Read More...

Soyuz, with Olympic torch and crew of three, docks with space station

A Soyuz rocket carrying a crew of three and an Olympic torch heralding the 2014 Winter Games in Sochi, Russia, streaked into orbit Wednesday and docked with the International Space Station early Thursday. Read More...

Sierra Nevada investigates Dream Chaser landing mishap

A landing gear malfunction that caused a small commercial spacecraft to skid off the runway after its first unmanned flight Saturday caused relatively minor damage, an official with builder Sierra Nevada said. Read More...

SpaceX launches upgraded Falcon 9 rocket

In a dramatic California test flight, SpaceX launched an upgraded, more powerful version of its Falcon 9 rocket Sunday -- a booster the company hopes will someday carry astronauts to the space station. Read More...

Cygnus cargo ship completes rendezvous, station capture

A commercial cargo ship making its maiden flight was successfully captured by the International Space Station's robot arm early Sunday in a major milestone for NASA.
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Soyuz takes off with three bound for space station

A Russian Soyuz rocket carrying two cosmonauts and a NASA astronaut blasted off from Kazakhstan Wednesday, climbed into orbit and docked with the International Space Station after a six-hour rendezvous. Read More...

Commercial cargo ship aborts initial approach to station

An Orbital Sciences Corp. Cygnus cargo ship making its maiden flight to the International Space Station aborted its initial approach to the lab complex early Sunday because of suspect navigation data.
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Orbital Sciences launches Cygnus cargo ship on maiden flight

In a critical test flight for NASA's space station program, an Orbital Sciences Corp. Antares rocket blasted off Wednesday, lofting a Cygnus cargo ship on its maiden flight to the international lab complex. Read More...

Orbital Sciences preps Cygnus cargo ship for station flight

In a major milestone for NASA, Orbital Sciences Corp. is readying an Antares rocket for launch Wednesday to boost an unmanned Cygnus cargo ship on a maiden flight to the International Space Station.
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Soyuz TMA-08M brings three station fliers safely back to Earth

Closing out a 166-day stay in orbit, two cosmonauts and a NASA astronaut rode a Russian Soyuz spacecraft back to Earth Tuesday, settling to a jarring rocket-assisted touchdown on the steppe of Kazakhstan.
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Realtime coverage of Russian EVA-35

Cosmonauts Fyodor Yurchikhin and Alexander Misurkin staged a five-hour 58-minute spacewalk Thursday to mount a camera aiming platform on the space station and to tighten loose antenna covers. Read More...

NASA introduces new astronaut class

NASA introduced eight new astronaut candidates to the public Tuesday, four men and four women who initially will focus on space station operations. Read More...

Realtime coverage of Russian EVA-34

Cosmonauts Fyodor Yurchikhin and Alexander Misurkin set a new Russian EVA record Friday, spending seven hours and 29 minutes outside the International Space Station to lay cables for a new lab module. Read More...

Japanese HTV cargo ship attached to space station

A Japanese cargo ship loaded with nearly 4 tons of science gear, supplies and spare parts was attached to the International Space Station Friday after a near-flawless rendezvous.
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Japanese cargo ship launched on station resupply flight

An unmanned Japanese cargo ship loaded with nearly 4 tons of science gear, spare parts and supplies rocketed away from Japan Saturday, kicking off a six-day flight to the International Space Station.
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Parmitano praised for 'grace under pressure' in aborted spacewalk

A dangerous leak resulting in a large blob of water sloshing inside Italian astronaut Luca Parmitano's space helmet forced NASA to abort a planned six-and-a-half-hour spacewalk Tuesday.
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Realtime coverage of U.S. EVA-23 (spacewalk terminated)

Astronauts Christopher Cassidy and Luca Parmitano cut short a planned 6.5-hour spacewalk Tuesday because of an unusual, and potentially dangerous buildup of water in Parmitano's helmet. Read More...

Realtime coverage of U.S. EVA-22

Astronauts Christopher Cassidy and Luca Parmitano staged a successful six-hour seven-minute spacewalk Tuesday, the first of two planned over seven days to work through a backlog of space station tasks. Read More...

Realtime coverage of Russian EVA-33

Cosmonauts Fyodor Yurchikhin and Alexander Misurkin staged a successful six-hour 34-minute spacewalk Monday, making preparations for installation of a new Russian laboratory module later this year. Read More...

European cargo ship docks with space station

An unmanned European Space Agency cargo ship loaded with 7.3 tons of supplies, spare parts and science gear docked with the International Space Station early Saturday. Read More...

Ariane 5 boosts European cargo ship on course to station

A powerful Ariane 5 rocket vaulted away from its South American launch pad Wednesday, lofting an unmanned European Space Agency cargo ship on a flight to the International Space Station. Read More...

Soyuz rocket blasts off, carries three to space station (UPDATED)

A Soyuz rocket blasted off Tuesday and thundered into orbit carrying a veteran cosmonaut, a NASA shuttle veteran and a rookie Italian test pilot on a fast-track flight to the International Space Station. Read More...

Soyuz prepped for launch to space station (mission preview)

Engineers prepped a Soyuz spacecraft for launch Tuesday to ferry three crew members -- a veteran Russian cosmonaut, an Italian test pilot and an American shuttle veteran -- to the International Space Station. Read More...

Station trio undocks, returns to Earth

A Soyuz spacecraft carrying three outgoing space station crew members undocked Monday, on track for landing in Kazakhstan to close out a 146-day mission. Read More...

Realtime coverage of U.S. EVA-21

Astronauts Thomas Marshburn and Christopher Cassidy carried out a five-hour 30-minute spacewalk Saturday to remove and replace a suspect coolant pump assembly on the space station's power truss. Read More...

ISS managers hopeful pump replacement will resolve coolant leak

NASA managers are hopeful the replacement of a pump module during an impromptu spacewalk Saturday will eliminate an ammonia coolant leak aboard the International Space Station, officials said Friday.
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NASA troubleshoots ammonia coolant leak; spacewalk on tap

Pending final approval, space station astronauts are gearing up for an unscheduled spacewalk Saturday to look for the source of an ammonia coolant leak on the far left end of the lab's solar power truss. Read More...

Progress docks with station; jammed antenna no problem

A Russian cargo ship hobbled by a jammed navigation antenna glided into its port on the International Space Station early Friday, completing a dramatic automated rendezvous. Read More...

Progress cargo ship takes off for station; antenna issue assessed

Russian flight controllers are troubleshooting a problem with a navigation antenna on an unmanned Progress supply ship launched Wednesday on a two-day flight to the International Space Station. Read More...

Orbital Sciences launches Antares rocket on successful test flight

A commercially developed rocket blasted off from the Virginia coast and streaked into space Sunday, chalking up a picture-perfect maiden flight that sets the stage for space station cargo flights later this year. Read More...

Antares launch delayed by high winds

For the second time in four days, the maiden flight of a powerful new rocket designed to boost space station cargo ships into orbit was called off Saturday, this time because high upper-level winds, officials said.
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Russian EVA-32

Cosmonauts Pavel Vinogradov and Roman Romanenko staged a six-hour 38-minute spacewalk Friday, accomplishing their primary objectives but dropping an experiment panel overboard. Read More...

Antares launch delayed to Saturday to avoid bad weather

Running two days late, Orbital Sciences managers decided Thursday to delay the maiden flight of the company's new Antares rocket one more day to Saturday because of expected bad weather. Read More...

Orbital Sciences Antares rocket cleared for maiden flight

Orbital Sciences Corp. made final preparations Tuesday for the first flight of its Antares rocket, a commercially-built booster designed to launch cargo ships to the International Space Station. Read More...

NASA unveils 2014 budget, touts asteroid capture mission

The Obama administration is requesting $17.7 billion for NASA in its fiscal 2014 budget proposal, including $105 million to begin laying the groundwork for a proposed mission to robotically capture a small asteroid. Read More...

Initial AMS data consistent with dark matter, but not yet proof

A $2 billion cosmic ray detector attached to the International Space Station has detected positrons that could be the result of dark matter interactions, but scientists say more observations are needed to be sure.
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Soyuz TMA-08M docks with station after four-orbit rendezvous

A veteran Russian commander, a rookie cosmonaut and a Navy SEAL-turned-astronaut blasted off Thursday and docked with the International Space Station less than six hours later. (UPDATED) Read More...

SpaceX cargo ship returns to Earth

A commercial cargo capsule plunged back to Earth Tuesday, wrapping up a month-long space station resupply mission with an on-target splashdown in the Pacific Ocean. Read More...

Soyuz TMA-06M brings three station fliers back to Earth

Running a day late, three space station crewmen strapped into their Soyuz ferry craft and dropped out of orbit Friday, plunging to a touchdown on the fog-shrouded Kazakh steppe to close out a 144-day mission.
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Dismal weather prompts 24-hour delay for Soyuz landing

Dismal weather in Kazakhstan forced Russian flight controllers to order a one-day landing delay for two Russian cosmonauts and a NASA astronaut who are closing out a nearly five-month stay in space. Read More...

Dragon cargo ship captured, berthed at station (UPDATED)

After a flawless rendezvous, a SpaceX Dragon cargo capsule was captured by the International Space Station's robot arm early Sunday, bringing more than a ton of supplies and equipment to the outpost. Read More...

Dragon cargo ship cleared for Sunday capture (UPDATED)

With its propulsion system working flawlessly, a SpaceX cargo ship loaded with supplies and equipment was cleared by NASA Saturday to press ahead for a day-late capture by the lab complex early Sunday.
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SpaceX restores Dragon thrusters (UPDATED)

A SpaceX cargo ship bound for the International Space Station thundered into orbit Friday, but trouble with maneuvering thrusters triggered extensive analysis and a delayed rendezvous. Read More...

SpaceX set for second Dragon resupply mission

SpaceX readied a Falcon 9 rocket and Dragon cargo ship for launch Friday to deliver more than 2,300 pounds of science gear, spare parts and crew supplies to the International Space Station. Read More...

Space station comm glitch assessed

A procedural issue during a software update aboard the International Space Station Tuesday briefly knocked the lab's satellite communications system out of action, but the problem was quickly resolved.
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Russian supply ship takes off on station resupply flight

A Russian supply ship loaded with 2.9 tons of supplies and equipment blasted off Monday and flew a fast-track trajectory to docking with the International Space Station just six hours later. (UPDATED)
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Bigelow inflatable module bound for space station

An inflatable module developed by a Las Vegas hotel entrepreneur will be attached to the International Space Station in 2015 for a two-year test run to evaluate the technology's performance in space. Read More...

Company test pilots to make first commercial spaceflights

The first American manned spacecraft to reach orbit in the wake of the shuttle's retirement will be crewed by company test pilots -- not NASA astronauts -- as early as mid 2015, company officials say.
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Soyuz TMA-07M docks with space station

A Russian Soyuz spacecraft glided to a smooth holiday docking with the International Space Station Friday, bringing three fresh crew members to the lab complex after a two-day orbital chase.
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Soyuz and three-man crew blast off on flight to space station

Braving arctic temperatures, a Russian Soyuz spacecraft roared to life and streaked smoothly into orbit Wednesday, carrying a veteran three-man crew on a two-day flight to the International Space Station. Read More...

Soyuz set for flight to space station

Looking forward to Christmas in orbit, a Russian cosmonaut, a Canadian shuttle veteran and a NASA physician-astronaut made final preparations for blastoff Wednesday aboard a Soyuz spacecraft. Read More...

Yearlong station flight challenging but doable, astronaut says

Spending a year in the cramped confines of the International Space Station will be challenging, but the two crewmen who plan to do just that in 2015-16 say they don't anticipate any major problems. Read More...

Kelly, Kornienko named to yearlong station flight

Astronaut Scott Kelly and cosmonaut Mikhail Kornienko, both veterans of long-duration space flights, will spend a full year aboard the International Space Station in 2015-16, NASA said Monday. Read More...

Soyuz brings three station fliers back to Earth (UPDATED)

Three space station fliers strapped into their Soyuz ferry craft, undocked and plunged back to Earth Sunday, making a fiery descent to a frigid pre-dawn landing in Kazakhstan to close out a 127-day stay in space. Read More...

Realtime coverage of U.S. EVA-20 (P6 coolant radiator bypass)

Station commander Sunita Williams and Japanese astronaut Akihiko Hoshide successfully bypassed a suspect solar array radiator and extended a spare panel in a bid to pinpoint the source of a leak.
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Progress supply ship docks; space station maneuvers to avoid debris (UPDATED)

Amid spacewalk preparations, the Russians launched a Progress supply ship, monitored its automated docking with the space station and then adjusted the lab's orbit to avoid a piece of space debris. Read More...

SpaceX cargo capsule leaves station, returns to Earth (UPDATED)

In a major milestone for the space station program, a commercial cargo capsule loaded with experiment samples returned to Earth Sunday, plunging back through the atmosphere to a Pacific Ocean splashdown.
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Coolant leak prompts Nov. 1 station spacewalk

Space station commander Sunita Williams and Akihiko Hoshide plan a Nov. 1 spacewalk to isolate a small, but growing leak in a solar array ammonia coolant loop. Read More...

Soyuz TMA-06M with three-man crew docks with space station

A Russian Soyuz spacecraft carrying two cosmonauts and a NASA astronaut glided to a smooth docking with the International Space Station Thursday, boosting the lab's crew back to six. Read More...

Three-man crew blasts off, heads for space station

Two rookie cosmonauts and a NASA shuttle veteran rocketed into orbit aboard a Russian Soyuz ferry craft Tuesday and set off after the International Space Station. Read More...

Russian Soyuz prepped for launch to space station

Facing a particularly intense first week in space, two cosmonauts and a NASA shuttle veteran geared up for launch early Tuesday aboard a Russian Soyuz spacecraft bound for flight to the International Space Station. Read More...

SpaceX Dragon capsule attached to space station (UPDATED)

A commercial cargo capsule loaded with a half-ton of supplies and equipment was captured by the International Space Station's robot arm early Wednesday after a flawless final rendezvous.
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Singer Sarah Brightman announces plans to visit space station

Soprano Sarah Brightman, believed to be one of the world's wealthiest classical crossover performers, has bought a seat on a Russian Soyuz spacecraft for a 10-day visit to the International Space Station. Read More...

SpaceX studies Falcon 9 engine failure

SpaceX engineers are reviewing telemetry to figure out what caused a dramatic first stage engine failure Sunday night during launch of a commercial cargo ship bound for the International Space Station. Read More...

SpaceX rocket boosts Dragon cargo ship into orbit (UPDATED)

An unmanned cargo capsule built by SpaceX under a $1.6 billion commercial contract with NASA was boosted into orbit Sunday on its first operational flight to the International Space Station. Read More...