barneystinson69 said:
How fast things advance. Will we have intergallatic starships in 50 years? Who knows!
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http://www.techtimes.com/articles/11867/20140801/nasa-acknowledges-impossible-fuel-less-drive-may-actually-work.htm
"Fetta's engine works by pushing against particles in what's called empty space, which in turn, creates thrust. Of course, space isn't actually empty, so, in theory, this works. The term for this is "quantum vacuum virtual plasma." In NASA's tests of the system, thrust happened without any need for fuel, making this engine the first of its kind to get the space agency's approval."
Quantum Vacumm engines :)
http://www.fool.com/investing/2016/12/04/what-is-emdrive-nasas-new-space-engine.aspx
They call it the Em-Drive.
"here's the most amazing part: Scientists still can't quite nail down how EmDrive jibes with Newton's Third Law of Motion, as it appears to create thrust without any need to expel propellant."