Across
- 1. way our galaxy
- 3. where all the planets are
- 7. none of this exists in space
- 8. balls of hot gas
Down
- 1. red planet
- 2. earth's twin
- 4. not a planet
- 5. only planet that we know of to have water
- 6. hole a place in space where gravity pulls so much that even light can not get out
- 9. Earth's natural source of light