Across
- 1. precisely or just right
- 5. 1000,000,000
- 7. a large system of stars
- 8. how much light something give off
- 10. very old
- 11. the force that pulls things toward Earth
- 14. to feel curiosity or amazement
- 15. full of stars
Down
- 2. relating to the sky or outer space
- 3. to find something for the first time
- 4. to honor a special day or event
- 6. new and not a copy
- 9. related to the sun
- 12. a scientist who studies stars and planets
- 13. without a moon in the sky