Across
- 4. When an object spins on its axis.
- 5. A smaller object that moves around a planet.
- 7. The sun and everything that moves around it.
- 11. A bright ball of hot gases in space.
- 12. The path an object takes around a star or planet.
- 13. A large round object that moves around a star.
Down
- 1. A huge group of stars, planets, and gas in space.
- 2. A rocky object that moves around the sun.
- 3. An invisible line that an object spins around a planet.
- 4. The movement of one object around another.
- 6. A space object with a bright tail made of ice and dust.
- 8. A person who travels to space.
- 9. The star at the center of our solar system
- 10. The force that pulls things towards a planet.
