Across
- 2. machine that explores Mars
- 4. dead planet
- 7. planet with a different orbit
- 10. cloud of dust and gas
Down
- 1. thing that holds down on the Earth
- 3. biggest planet in our Solar System
- 5. fifth biggest planet
- 6. Way-The galaxy we live in is the ________________.
- 8. only star in our Solar System
- 9. red planet