Elon Musk
@elonmusk · 26 janv. 2015
If u saw @TheSimpsons and wonder why @SpaceX doesn't use an electric rocket to reach orbit, it is cuz that is impossible
Elon Musk
@elonmusk
Reason is Newton's Third Law. In vacuum, there is nothing to "push" against. You must react against ejected mass.
03:36 · 26 janvier 2015 · 0 vues
162
640
1,3 k