Across
- 2. earths natural satellite.
- 4. the star in the center of our solar system.
- 5. A person who travels in space.
- 7. The Galaxy we live in.
- 8. Earth's red neighbor.
- 9. The biggest planet in the solar system.
Down
- 1. the only dwarf planet in the solar system.
- 2. the smallest planet in the solar system.
- 3. A big space administration in the U.S.
- 6. "The Hubble _________ is huge!".