A microwave thruster system that needs no propellant generates a small amount of thrust regardless.
In an effort to visualize what a future starship may look like, NASA physicist Sonny White and space artist Mark Rademaker have teamed up to create the 'IXS Enterprise.'
Space station astronauts had an uninterrupted view of the fiery death of an unmanned cargo vehicle on Nov. 2. Here are the photos.
The Air Force says it is using the experimental space plane to test technologies, but provides no details.