2006-08-26 20:50:59 · 7 answers · asked by Nathan N 1 in Science & Mathematics ➔ Engineering
The same way that you move!
-by pushing against something. The laws of physics are not different in space. When you move on earth you push against the earth's surface to acquire forward momentum. A spacecraft pushes against expanding gases from a reaction control nozzle. Same mechanism, different manifestations. Exact same result- motion!
2006-08-26 21:00:28 · answer #1 · answered by zamir 2 · 1⤊ 1⤋
Once the rocket engine is empty it is jettisoned the spacecraft continues moving at the same rate of speed due to simple frictionless inertia. The trajectories are very carefully calculated and take into account the original thrust as well as gravity of planets and other bodies. Small attitude control jets around the spacecraft allow adjustments in direction the ship is facing. Further short bursts of rocket engines allow the craft to change course. Also they can use gravity looping around planets or moons to reverse course and gain speed.
2006-08-27 04:02:27 · answer #2 · answered by Anonymous · 1⤊ 1⤋
It works on Rocket Engine principal.Burning fuel gives power to engine --thrust which pushes spacecraft forward.But it drop out the burnt out fuel components to less weight
2006-08-29 20:32:38 · answer #3 · answered by Shahid 7 · 0⤊ 1⤋
It uses the reaction principle to move.
2006-08-30 10:32:14 · answer #4 · answered by Anonymous · 0⤊ 0⤋
physics. for each action there is an opposite and equal reaction in a vaccuum. if you push one way, you will go the opposite way
2006-08-27 03:53:42 · answer #5 · answered by Anonymous · 1⤊ 1⤋
They use infinite improbability drive. It is all in Hitchiker's guide to galaxy, you should read it.
2006-08-27 03:54:25 · answer #6 · answered by firat c 4 · 1⤊ 2⤋
it just does, usually there is someone in the space craft pushing on the accelerator pedal
2006-08-27 03:53:32 · answer #7 · answered by michaeljustussvcc 1 · 0⤊ 3⤋