Attired in training versions of their shuttle launch and entry suits, these four astronauts take a break in this stunning desktop space wallpaper to pose for the STS-135 crew portrait.

In this space wallpaper of the Andromeda galaxy from ESA’s Herschel space observatory, cool lanes of forming stars are revealed in the finest detail yet. The image was released Jan. 28 2013.

NASA astronauts Suni Williams and Butch Wilmore completed their spacewalk at the International Space Station (ISS) at 1:09 p.m. ET on Thursday, after spending 5 hours and 26 minutes in the vacuum ...

Fincke, 54, is a NASA astronaut who has spent over a year in space—at one time holding the national record. Since reaching space for the first time in 2004, ... So you can make them look very cool.