Across
- 1. Earth's natural satellite
- 4. Nursery for new stars
- 7. Invisible force that pulls objects together
- 8. Planet closest to Earth
- 9. Region of space where light cannot escape
Down
- 1. Galaxy we live in
- 2. Hottest planet
- 3. Biggest planet
- 5. Planet with perfect living conditions
- 6. System of stars bound together by gravity