Across
- 4. A person who travels in space
- 6. The planet we live on
- 7. Known as the Red Planet
- 9. Icy rock that flies through space with a tail
Down
- 1. A huge group of stars and planets
- 2. Used to travel into space
- 3. The biggest planet in our solar system
- 5. Tool to look at stars and planets
- 7. Orbits around the Earth
- 8. The star at the center of our solar system
