View Single Post
Jul5-11, 09:54 PM
P: 334
Quote Quote by Redi View Post
. Is there a force that keeps them in a specific distance from each-other or they will pull each-other for a long time until they maybe crash??

Two forces

1. Gravity = pulling at each other
2. Centrifugal force = trying to move away from each other

Keeps them at a safe distance.

The moon is slowly moving away from the earth. So in the far future it will be significantly farther from earth than it is now.