Across
- 1. when the Sun rises over the horizon
- 3. the imaginary line that travels through the Earth
- 4. the study of space
- 5. summer, spring, winter, fall
- 6. traveling around something else
- 8. a representation of something else
- 11. the Earth's only natural satellite
- 13. the Earth has this type of rotation
- 15. the path something follows in space
- 16. there are 24 ________ in a day
- 17. when the Sun dips below the horizon
Down
- 1. dark shape that is produced when light is blocked
- 2. when the Sun is highest in the sky
- 7. a tool used by astronomers to look at light in space
- 9. where the sky and land meet
- 10. spinning on its axis
- 12. the first space-based optical telescope
- 14. the planet we live on
- 18. the center of our solar system (gives us heat)