The Sun

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Across
  1. 3. what the sun becomes after it explodes
  2. 4. the the Milky Way is what.
  3. 8. gives us heat on earth.
  4. 9. fuse hydrogen atoms together
  5. 11. region of the Sun's atmosphere
  6. 12. a nuclear reaction in which atomic nuclei
  7. 15. gives the sun energy
  8. 16. red gaseous layer above the photosphere
  9. 17. material that fills empty space
  10. 19. huge collection of gas and stars.
Down
  1. 1. a place in space where gravity pulls
  2. 2. in the middle of the sun
  3. 5. a very large star of high luminosity
  4. 6. a object of very high luminosity
  5. 7. light and heat radiate
  6. 10. this can have over 100 galaxys.
  7. 13. extremely small amount of a thing or quality
  8. 14. when the sun explodes it called what?
  9. 18. when will the sun explode