Across
- 2. The orbiting object around planets
- 4. Named after the Greek God that is the Messenger
- 7. Something that will keep oxygen in
- 9. The thing that is needed to sustain life
- 10. Another word for a rocky planet
Down
- 1. The planets inside the asteroid belt
- 3. The hottest planet of all the inner planets
- 5. The only known planet to sustain life
- 6. an ellipse that shows a planets movement
- 8. Sometimes called the "Red Planet"