X-37B robot plane has its mission extended past 270 days in continuous flight. The mission of the X-37B is unknown.
Japan earthquake relief efforts are underway, with one US Navy ship already loading humanitarian supplies. The Pentagon's first priority Friday, however, was to make sure all its personnel and equipment in Japan and the Pacific were safe.
X-37B is an unmanned US Air Force space plane. The X-37B made a successful return on Friday after 220 days in Earth orbit.
Air Force spokesman says X37-B space plane is not a "weaponization of space."
The secretive X-37B robot space plane was launched late Thursday. Destination unknown.
Shrouded in secrecy, the Air Force mystery spaceship X-37B will launch tonight in Florida.
Under cover of darkness, gardeners plant and maintain neglected plots of public land.