A scale model of Boeing's CST-100 spacecraft with an Atlas V rocket successfully underwent a fit check at NASA Langley…
Magnetic loops carry gas and dust above disks of planet-forming material circling stars, as shown in this artist's conception. These…
Astronaut William R. Pogue, pilot of the Skylab 4 mission, relaxes during spacesuit pressure and fit checks at the Kennedy…
At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 39/40 Flight Engineer Steve Swanson of NASA (left), Soyuz…
This graphic depicts the passage of asteroid 2014 DX110 past Earth on March 5, 2014.
Expedition 39/40 backup crew members Barry Wilmore of NASA (left), Soyuz Commander Alexander Samokutyaev of Roscosmos (center) and Flight Engineer…
Expedition 39/40 backup crew member Elena Serova of Roscosmos signs in for the first of two days of qualification exams.
Expedition 39/40 backup crew member and Soyuz Commander Alexander Samokutyaev of Roscosmos signs in for the first of two days…
Expedition 39/40 backup crew members Barry Wilmore of NASA (left), Soyuz Commander Alexander Samokutyaev of Roscosmos (center) and Flight Engineer…
The image of Yuri Gagarin, the first human to fly in space, looms over Expedition 39/40 backup Soyuz Commander Alexander…
