Quote:
Originally posted by mojo
All a rocket is doing is shifting its mass in the opposite direction of it's travel. The hot expanding gases push on the rocket and the rocket pushes on the gases... which is why a rocket works in a vacuum.
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Heres a question.
Considering the laws of momentum and the conservation of mass, does burning rocket fuel in a vacuum achieve any greater thrust than simple squirting the same mass of propellant out the back of the rocket without igniting it ?