Astronauts had to pull out a hammer and pry bar while attaching a big, new tank full of ammonia cool...

STS-131 spacewalkers Rick Mastracchio and Clay Anderson configured an old Ammonia Tank Assembly (ATA...

Two cosmonauts leave the International Space Station to work on Russia’s new Poisk module to prepare...

The astronauts completed all their tasks during the third and final spacewalk scheduled during Atlan...

Shuttle Atlantis astronauts began the second of their mission's three spacewalks to maintain and ins...

Atlantis crewmen Michael Foreman and Dr. Robert Satcher Jr had a spare antenna installed in just two...

During the 6.5 hour spacewalk, two astronauts will deploy an attachment system and replace a device ...

The space agency keeps track of a large piece of space debris likely to pass the ISS outpost on Frid...

US astronaut Mike Fincke and Russian Cosmonaut Yury Lonchakov wound up nearly six hour of spacewalk ...