Across
- 2. contain water and oxygen for life
- 4. like the Earth in some ways
- 5. Mercury, Venus, Earth,and Mars and inner planets
- 6. celestial object orbits Earth
- 8. planets range in thickness and composition made of gases
- 10. Has their shortest orbit around the sun
Down
- 1. the planets after the inner planets
- 3. Earth’s sister planet
- 7. move around a planet
- 9. known as the red planet