A laser hit the tiny black cube, and it lurched forward almost at once. That split-second jump, caught during a zero-gravity ...

Antigravity -- Beyond rocket propulsion -- Onward and upward -- An etheric explanation -- The U.S. antigravity squadron -- Gravity beam propulsion -- Project skyvault -- Microwave phase conjugation -- ...

A former NASA engineer has stirred excitement with claims of a revolutionary gravity-defying engine that could redefine space ...