Across
- 4. Planet known as the red planet
- 5. this used to be called a planet, but now it isn't
- 7. planet named after the sea god
- 8. an icy rock that has bright tail when it comes close to the sun
Down
- 1. the largest planet in the solar system
- 2. the paht that a planet takes around the sun
- 3. Earth's companion
- 6. planet closest to the sun
