vocabulary

3. :Theory that the earth was the center of the universe.
5. :An imaginary line going through the center of a sphere’s north and south poles.
6. :A person who studies space.
7. :Everything in space as a whole.
10. :The study of space beyond our atmosphere.
11. :The path of an object around another object in space

1. :Theory that states the sun is the center of the solar system.
2. :A hole in the surface a planet or moon caused by a rock from space hitting the surface.
4. :When an object travels around another.
6. :An imaginary line going through the center of a sphere’s north and south poles.
8. :A planets spin on its axis.
9. :A force that pulls objects towards the center of the earth,,other planets or moons.