In article ,
"George Kinley" wrote:

if there is no Atmosphere, where do rockets that go in Space get thrust from

They expell mass in one direction, which causes them to go in the other
direction. The atmosphere has very little to do with how rockets work;
it's just a simple law of physics: every action (force) causes an equal
and opposite reaction (counterforce). The rocket "pushes" on the
exhaust gas, causing it to accelerate to a very high velocity; the
exhaust gas pushes back on the rocket, causing it to accelerate in the
opposite direction (but more slowly, since the rocket has a lot more
mass than the exhaust gas -- but that involves a different law).

When you get into high school physics, you'll learn all about Newton's
laws and how things like rockets work. It's really cool stuff, and it's
neat to see you taking an interest in it already -- you'll probably be
way ahead of most of the class!

Best,
- Joe

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