Image Article

NASA astronaut Chris Cassidy works with the Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES.

Russian cosmonaut Fyodor Yurchikhin outfits the International Space Station during a seven-hour, 29-minute spacewalk.

Russian cosmonaut Fyodor Yurchikhin outfits the International Space Station during a seven-hour, 29-minute spacewalk.

Russian cosmonaut Fyodor Yurchikhin outfits the International Space Station during a seven-hour, 29-minute spacewalk.

Russian cosmonaut Fyodor Yurchikhin outfits the International Space Station during a seven-hour, 29-minute spacewalk.

Russian cosmonaut Alexander Misurkin outfits the International Space Station during a seven-hour, 29-minute spacewalk.

NASA astronaut Karen Nyberg is pictured near fresh fruit floating freely in the Unity node of the International Space Station.

NASA astronaut Chris Cassidy works with the Synchronized Position Hold, Engage, Reorient, Experimental Satellites, or SPHERES.

Planeterrella demonstrating the Earth's Northern Lights. The color of the aurora is purple because of the nitrogen in the ambient…

Langley scientist and an intern spent the summer building Planeterrella, which recreates Earth's Northern Lights and the auroras from several…