Across
- 1. Earth's "twin" is this planet.
- 4. This is the largest planet in the solar system.
- 6. The planet famous for its rings is...
- 7. We live on this planet.
- 8. This planet is closest to the sun.
Down
- 2. This planet was discovered last.
- 3. This planet is called the "Red Planet."
- 5. The coldest planet is...