Across
- 2. visible surface of the sun
- 3. main portion of its life
- 5. violent explosion
- 6. method used by astronomers
- 7. directly above the photosphere
- 9. mid-sized star
- 11. removed from atoms
- 15. huge amounts of energy
- 16. group or clusters of stars
- 17. two atoms fuse together
- 19. massive star
Down
- 1. tremendous explosion
- 4. explodes as a supernova
- 5. flowing between sunspots
- 8. star'[s development
- 10. energy moves atom to atom
- 12. outermost layer
- 13. particle of light
- 14. surrounds the radiative zone
- 18. glowing sphere of gases