A huge ball of gas that gives off light.

Star at the center of our solar system. Earth orbits around it and it provide us with energy.

How far is Earth from the sun?

How long does it take for the energy of the sun to reach Earth?

What force keeps the planets, sun, and moon in orbit?

This is made up of millions or billions of stars, gas, and dust held together in a group by gravity.

An example of a model would be a ________.

The sun is 109 times larger than Earth.