>The "vacuum of space" would suck it away From the gravity of earth? Static electricity can hold matter on a balloon even when a fan blows on it. Not an ideal comparison, but the earth does have plenty of static electricity. >The interstellar radiation NASA says is up there and the Van Allen radiation belts So how does space radiation stop a space ship from working? >rocket engines "push" off of matter so it could take off of a large asteroid or moon, but there would be no continuous push. For every action there is an equal and opposite reaction. If you were to break open a compressed air cylinder on earth it would "take off like a rocket" despite it not having a combustion. Likewise a puff of air in space would propel the thing puffing the air out as it would be pushed in the opposite direction from the puff and in the vacuum of space there would be little to nothing in the way of the object being pushed by letting out the gas.