
Developed jointly by Stanford University and NASA’s Marshall Space Flight Center, Gravity Probe B (GP-B) was a scientific mission intended…

NASA Administrator Charles Bolden delivers the opening keynote address at the Humans to Mars Summit on April 22, 2014 at…

On Sunday, April 20, 2014, the Expedition 39 crew aboard the International Space Station welcomed nearly two and a half…

Expedition 39 Flight Director Matt Abbott looks over incoming data at his console during the SpaceX spacecraft's rendezvous.

Expedition 39 Flight Director Matt Abbott looks over incoming data at his console during the SpaceX spacecraft's rendezvous.

Expedition 39 Flight Director Matt Abbott looks over incoming data at his console during the SpaceX spacecraft's rendezvous.

Expedition 39 flight controllers are seen on console during the SpaceX spacecraft's rendezvous and grappling operations on April 20.

Expedition 39 flight controllers are seen on console during the SpaceX spacecraft's rendezvous and grappling operations on April 20.

Expedition 39 Flight Director Matt Abbott looks over incoming data at his console during the SpaceX spacecraft's rendezvous.

Expedition 39 Spacecraft Communicators (CAPCOM) Jack Fischer (left) and Randy Bresnik are at work during the SpaceX spacecraft's rendezvous.