Across
- 3. To bounce back light or sound; to think carefully
- 6. The force that pulls things toward the center of the Earth
- 8. A bowl-shaped hole made by an explosion or a meteorite
- 9. All of space and everything in it, including stars and planets
- 10. To look steadily at something
- 11. Clue
Down
- 1. The study of the sun, moon, stars, and planets
- 2. In addition to; also
- 4. A unit for measuring temperature or an academic title
- 5. The distance across a circle through its center
- 7. A tool that makes faraway things look closer and larger