
This concept image shows an astronaut retrieving a sample from the captured asteroid.

Super heated exhaust is a byproduct of engine testing in the Engine Research Building (ERB) at NASA’s Glenn Research Center.

Russian cosmonaut Alexander Misurkin 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.

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.

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