Air Force X-37B space plane at 500 days in orbit.
The latest secretive mission of the United States Air Force's X-37B space plane has cruised beyond 500 days in Earth orbit since its launch last...
$2 billion rocket company merger could create giant SpaceX rival
Space craft builders create a joint venture. United Launch Alliance was formed by Lockheed Martin and Boeing to launch spy and navigation satellites for the Pentagon and Air...