Across
- 2. This planet has many rings and moons.
- 3. Also known as the red planet.
- 4. This planet is named after the Roman God of water.
- 8. This planet sounds a bit rude.
- 9. The biggest planet in the solar system.
Down
- 1. This is the force that keeps all the planets in place.
- 3. The planet closest to the sun.
- 5. The planet between Mercury and Earth.
- 6. This is no longer classed as a planet.
- 7. The only planet with life.