Gizmodo has a fascinating story about NASA scientists who appear to have proven that Roger Shawyer’s quantum vacuum plasma thruster, known as the EmDrive (a.k.a., Relativity Drive), actually works. But, they’re not sure exactly why. Shawyer’s engine is extremely light and simple. It provides a thrust by “bouncing microwaves around in a closed container.” The microwaves are generated using electricity that can be provided by solar energy. No propellant is […]