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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MAVEN healthy, collects initial science data

Initial data from NASA's MAVEN Mars orbiter demonstrates the orbiter's ability to study the red planet's upper atmosphere with the precision required to help map out its structure and evolution.
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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...

Mars spacecraft poised for dramatic comet flyby

An international fleet of five Mars orbiters and two rovers will have ringside seats when a mountain-size comet streaks by on Oct. 19, passing within a scant 87,000 miles of the red planet at a blistering 126,000 mph, NASA scientists said Thursday.
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Air Force takes over 2 shuttle processing facilities

Boeing is modifying the Kennedy Space Center's remaining two orbiter processing facilities to service the secret X-37B spaceplane for the Air Force, NASA announced Wednesday.
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NuStar discoveres brilliant 'mighty mouse' pulsar

A NASA space telescope studying X-ray emissions from a nearby galaxy has discovered the brightest pulsar ever detected, the fast-spinning remnant of a collapsed star that shines so intensely it was initially mistaken for a massive black hole.
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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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MAVEN spacecraft brakes into orbit around Mars

NASA's MAVEN spacecraft braked into orbit around Mars Sunday, a major milestone for a $671 million mission find out how much of the martian atmosphere leaked away in the distant past.
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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...