All matter and space that exists is called the

Planets orbit around a star (like the Sun), because of gravity is called

What is the name of the scientific theory that explains how the universe was created?

A bright, shiny sphere of plasma (very hot gas) is called

A round and massive object that orbits around a star. They can be made of rocks, gasses, or gas and ice.

An object that orbits a planet is called a

Our solar system formed from

What force helped with the formation of the sun and planets?

Only Earth has a moon

What do all inner (Terrestrial) planets have in common?