Across
- 2. smallest planet in our solar system
- 5. Earth's only natural satellite
- 6. planet rotates on its side
- 8. group of stars forming a recognizable pattern
- 10. small rocky or metallic body in outer space
Down
- 1. planet closest in size to Earth
- 3. celestial object consisting of a nucleus of ice and dust
- 4. large ball of burning gas that produces light & heat
- 7. layers of gases that envelope earth
- 9. total planets in solar system