Across
- 1. celestial object that orbits
- 4. contains water and oxygen needed for life
- 5. earth like
- 6. planets between the Sun and asteroid belt
- 8. gasses that surround a planet
- 9. known as red planet
Down
- 2. planets that are further from the Sun
- 3. moving repeditaly around
- 7. earths sister planet
- 9. shortest orbit around the Sun