One of the station's solar arrays is leaking coolant used to prevent the station's power systems from overheating, but it apparently doesn't pose a danger to the crew.
But now they're home for the holidays -- home at the International Space Station, that is, after a high-stakes repair job clearing the way for reactivation of a critical coolant system.
In one of the coolest zero-g cover songs ever recorded, Canadian astronaut Chris Hadfield does a heartfelt rendition of David Bowie's classic before returning to Earth.
NASA is racing the clock to iron out plans for two quick-response spacewalks to replace a critical coolant system pump aboard the International Space Station.
A $2 billion cosmic ray detector attached to the International Space Station today already is beaming down a steady stream of data as torrents of high-energy particles from deep space pass through.
Commander Mark Kelly guides the shuttle Endeavour to a picture-perfect docking with the International Space Station, wrapping up a two-day rendezvous that began with the launch Monday.
Multiple alarms woke the space station's crew late Saturday after one of two coolant loops shut down, forcing the astronauts to power down critical systems. Two spacewalks are being planned to fix the problem.
Standing 2,080 feet tall, the Tokyo Sky Tree is a new digital broadcast tower built on reclaimed land in the Japanese capital. Engineers are confident it won't topple in an earthquake.
When NASA retires the space shuttle fleet next month with STS-135, the mission will carry a refueling experiment that could help extend the life of satellites.
Boston Dynamics' supersized AlphaDog gets let off the leash in a forest. This is one monster robot--check out the DARPA video for yourself.