Across
- 2. dipper: big spoon in the sky
- 5. small and red
- 7. giant: when a star expands
- 9. way: the galaxy we are in
- 12. hot glowing sphere
- 15. the chemical element of atomic number 80
- 16. large snowball
- 19. big & blue
- 21. year: the distance a beam of light travels
- 22. a flytrap
Down
- 1. largest planet in our solar system
- 3. large group of stars, gas, and dust held by gravity
- 4. unit: the distance between the Sun and the Earth
- 6. not a planet or is it?
- 8. only planet with water that we know
- 10. 6th from the sun
- 11. Outermost layer of a star's atmosphere
- 13. was thought to be made of cheese
- 14. large cloud of dust and gas
- 17. discovered in 1846
- 18. tail: created by sun
- 20. center of our solar system