As effective as this kindof propulsion may sound, it challenges one of the essential concepts of physics– the conservation of momentum, which states that for anything to be propelledforward, some kind of propellant must be pushed out in the opposite direction.For that reason, the drive was generally laughed at and overlooked when it wasdesigned by English

scientist Roger Shawyer in the early 2000s. But a few years later, agroup of Chinese researchers decided to construct their own version, and toeveryone’s amazement, it really worked. Then an American inventor did thesomething just like that, and convinced NASA’s Eagleworks Laboratories,supervised by Harold ‘Sonny’ White, to give it a try. And they admitted

that it actually works . Now Martin Tajmar, a well-known professor andchairman for Space Systems at Dresden University of Technology in Germany, hasworked with his own EM Drive, and has once again revealed that it producesthrust – although for reasons he can’t clarify yet.