SOLAR SYSTEM

Detailed explanation-1: -The belt probably contains at least 40, 000 asteroids that are more than 0.5 miles across. If an asteroid is captured by the gravitational pull of a planet, the asteroid can be pulled out of the belt and go into orbit as a moon around the planet that pulled on it.

Detailed explanation-2: -Four billion years ago, the inner solar system appears to have been bombarded with an unexpectedly large number of meteor collisions. And big ones, too. It was a “heavy bombardment” that created the largest impact basins on the Moon, Mars, and Mercury.

Detailed explanation-3: -The shock wave fractures the rock and excavates a large cavity (much larger than the impactor). The impact sprays material-ejecta-out in all directions. The impactor is shattered into small pieces and may melt or vaporize. Sometimes the force of the impact is great enough to melt some of the local rock.

Detailed explanation-4: -Orbiting objects, which are called satellites, include planets, moons, asteroids, and manmade devices. Objects orbit each other because of gravity. Gravity is the force that exists between any two objects with mass.