Across
- 4. The fourth planet from the sun.
- 6. Has the hottest surface temperature
- 8. Known as the ice giant planet.
- 9. Lumps of rock that broke off from planets long ago.
- 10. Smallest gas giant.
Down
- 1. Planets that have a solid surface.
- 2. The first person to step on the moon.
- 3. Planets with gaseous surfaces.
- 5. The only star in our solar system.
- 7. Only has one moon.