Across
- 2. Earth natural satellite
- 5. There are four different ..... in a year.
- 7. Our terrestrial planet
- 8. Planets form our .......
- 10. Another word for a rock planet
- 11. Contains billions of stars
- 12. The solar systems biggest planet
Down
- 1. a group of stars
- 3. The planet next to Earth further from the Sun
- 4. Earth spins on this
- 6. A gas giant planet with many rings
- 9. Planet closest to the Sun
- 11. The force that keeps us on the ground