Across
- 3. the earth in the center of the universe
- 5. a device to see the stars
- 6. a person who studies up
- 7. space as a whole
- 10. the study of something up
- 11. the moon around the earth
Down
- 1. the sun in the center of the universe
- 2. a hole on the moon
- 4. when an object travels around another object
- 6. an imaginary line through the earth
- 8. A planets spin on its axis
- 9. the force that pulls us toward the earth