Posted 4/24/2014 08:26 (#3833522 - in reply to #3833515) Subject: RE: Questions about space travel.
SW KS, near Dodge City
The correct way to look at is not about "pushing against" something, but that in space there is less force acting against it for it to overcome, therefore the propulsion created generates much higher speeds, b/c it doesn't have to counteract as much gravity and friction loss to the atmosphere.