Across
- 2. Earth's air is made up of Nitrogen and ____
- 4. Sometimes called Earth's twin
- 5. Mars has two moons, Deimos and ______
- 8. Closest to the Sun
- 10. Another word for rocky
Down
- 1. Mercury was the _____ god in Roman mythology
- 3. Belt A bunch of large rocky chunks
- 6. The planet you live on
- 7. Venus was named after the goddess of ____
- 9. Known as the red planet