Update: NASA has postponed the spacewalk due to a "medical concern with a crew member." NASA did not identify the astronaut, nor share details about the medical issue. A new date for the spacewalk has ...

Nasa astronaut Suni Williams, one of two astronauts stuck on the International Space Station, ventured outside for a spacewalk on Thursday for the first time since arriving on board seven months ago.

NASA astronauts are preparing for two space walks this month to complete repairs and upgrades to the International Space Station. Scheduled for January 8 and 15, the spacewalks are each expected to ...