LOL... So you had this discussion with someone (who clearly is as uneducated as you are) and you thought, "Hey! There is no way they propel the rocket/space shuttle/satellite around in outer space, where there is no oxygen or air to push against" and thought yourself to be a genius, huh?
Firstly, this is the wrong forum to discuss college physics, secondly, refer to some basic college physics and you will understand the answers to your questions. If you need some help to get started, use this link:
