Connect to share and comment

x-37B space

Appears In:
Top-secret unmanned X-37B space plane lands after yearlong mission
The unmanned US Air Force test vehicle completed a 469-day classified mission.
See More
x-37B space

A Delta II rocket launches from Space Launch Complex 2 at Vandenberg Air Force Base, Calif. on Friday, Oct. 28, 2011.

Bill Ingalls/NASA
AFP/Getty Images