For more than a century, gravity has been the immovable backdrop of modern physics, a force that can be described and exploited but never truly switched off. Now a former NASA engineer says he has ...

This new propulsion system could rewrite the rules of spaceflight—not to mention completely defy conventional physics.

Placing a mass driver on the moon has long been a dream of space exploration enthusiasts. It would open up so many possibilities for the exploration of our solar system and the possibility of actually ...

National Air and Space Museum Technical Reference Files: Aircraft, NASM.XXXX.1183.B, National Air and Space Museum, Smithsonian Institution. National Air and Space Museum Technical Reference Files: ...