Across
- 4. how much weight the sun loses per second
- 5. how far the moon drifts away from earth in one year
- 7. the star that gives us natural light and heat
- 10. the 5th planet and the largest planet
- 11. how old the light hitting the earth is
- 14. this planet could float in water
- 15. how and fast earth travels in one second
Down
- 1. dwarf planet
- 2. what the planets were named after
- 3. ice giants
- 6. pictures in the sky
- 8. the closest planet too the sun
- 9. somebody who observes space
- 12. the study of space
- 13. a ring in the universe