Across
- 3. the movement of Earth around the sun (equals 1 year)
- 5. a group of stars that form a shape in the sky
- 6. Earths natural satellite that reflects light from the sun
- 7. the different "shapes" of the moon throughout the month
- 11. the force that pulls things towards the center of Earth
Down
- 1. a tool used for looking at objects in space
- 2. a planet spinning on its own axis (equals 1 day)
- 4. someone who studies space and the physical universe
- 8. another term for the path a planet takes around the sun
- 9. an invisible line that a planet spins around
- 10. a tool that uses shadows to tell the time