Across
- 2. When all forces are equal and cancel each other.
- 4. When all forces are not equal and do not cancel each other.
- 8. The only star in our solar system.
- 10. Object orbits around another object.
- 11. A very large group of stars and planets.
- 12. It takes the moon 28 days to complete each of these.
Down
- 1. A push or pull that has strength and direction.
- 3. Force that pulls all objects to the center of the Earth.
- 5. Object spins on an axis.
- 6. A burning sphere of gases that gives off light.
- 7. The galaxy that includes our solar system.
- 9. All the things that exist in space.