The Hows and Whys of Space Flight are covered in Elementry School Level science and even touched upon in history classes.

Things like action and reaction are covered and so to are elementry level explinations about the size and gravity of the moon and how that was used to the advantage of the appollo space missions.

Since you do not know much about space vehicles, then might I suggest a trip to your local library? There are tons of books on the subject with lots and lots of diagrams, graphs and even illutrations and pictures.

Coming here to GLP with this sort of question is going to lead to your getting bad information and will ultimately lead to fights on the subject of Hoax - No Hoax.

This last is important because folk will see your questions as trolling.