would solid fuel rockets work in a vacuum? according to newtons 3 rd law for every action there is an equal and opposite reaction, when the hypothesis that they do not work in a vacuum was "disproved" on mythbusters they vacuumed out a chamber put a small solid fuel rocket motor on a toy car and the thing took off after a brief delay, my contention is that was only a vacuum briefly before it was a gaseous enviro from the burnt rocket gases allowing the ejected gas to react with the newly created environmental gas, in the vacuum of space there would be no resistance to the expelled gas therefore is it possible for rocket motors to produce thrust in a true continuous vacuum such as space?
