a thoughtful web.
Good ideas and conversation. No ads, no tracking.   Login or Take a Tour!
comment
jleopold  ·  3405 days ago  ·  link  ·    ·  parent  ·  post: 'Impossible' rocket drive works and could get to Moon in four hours

I'm a bit confused on how they know. Did the researchers build a couple, because there was a picture labeled Em Drive? Or is it all still theoretical, done using math, and the picture just show what it would look like or a prototype?