What keeps the Earth from drifting out into space?

Question

What keeps the Earth from drifting out into space?

In: Physics

Answer 1

The sun’s gravity.
When the solar system was forming there as a lot of dust all over the place.
The dust that was going fast enough already drifted out into space.
The dust that wasn’t going fast enough fell into the sun.
Only the dust that was going at the right speed formed asteroids then the planet earth.