Across
- 4. no longer living, (ex: dinosaurs)
- 7. what SETI scientist listen for in space
- 9. red planet
- 10. idea
- 11. create or make
- 12. our planet
Down
- 1. number of years it takes to travel across the universe
- 2. big hot star, the center of our universe
- 3. the eight planets and our sun
- 5. long object with a lens use to look at the stars
- 6. bacteria
- 8. space scientist