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...
Northrop Grumman Developing XS-1 Experimental Spaceplane Design for DARPA
Northrop Grumman Corporation (NYSE: NOC) with Scaled Composites and Virgin Galactic is developing a preliminary design and flight demonstration plan for the Defense Advanced Research...