NASA astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore surely didn't think they'd still be on the International ...

The two astronauts have a busy day ahead of them. Hague and Williams will "patch light leaks in the NICER X-ray telescope, ...

Two spacewalks scheduled for this January will see astronauts updating station hardware and searching for microorganisms on ...

LIVE: Astronauts Sunita Williams and Nick Hague are to conduct a 6.5-hour spacewalk outside the ISS to perform critical maintenance and upgrades.

NASA astronaut Don Pettit has snapped a striking shot of the super-bright comet racing past our planet for the first time in ...

CAPE CANAVERAL, Fla. -- One of NASA’s two stuck astronauts got a much welcomed change of scenery Thursday, stepping out on ...

They will swab the exterior of the International Space Station to collect microbiological samples surviving in the vacuum of ...

Two NASA astronauts are preparing for the first spacewalk of the year aboard the International Space Station (ISS). The ...

One of NASA's two stuck astronauts has stepped out on her first spacewalk since arriving at the International Space Station ...

NASA will webcast the spacewalk live, beginning at 6:30 a.m. EST (1130 ... is a $2 billion particle detector that launched to the ISS in 2011. The instrument hunts for elusive dark matter by ...