Across
- 3. planetary nebula's core compressed
- 5. stage after supernova
- 6. the brightness of a star
- 8. the brightness of a star
- 13. cool giant star, late in it's life cycle
- 15. star constellation in the north hemisphere
- 16. stars grouped together
- 17. the distance light travles in a year
- 18. the earliest stage of a stars life
Down
- 1. a large cloud of hydrogen, helium and dust
- 2. the galaxy we live in
- 4. the Milky Way
- 7. a cloud of dust and gas that forms stars
- 9. where stars form
- 10. galaxy with old stars
- 11. stage stars spend majority of their life in
- 12. galaxy with no definate shape
- 14. north star