Micah M 8

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Across
  1. 3. Start of expansion
  2. 4. Cloud of gas and dust
  3. 7. Stream of charged particles Prominence Loop of gas
  4. 9. Hottest layer of atmosphere
  5. 10. Warm rises, cool sinks
  6. 11. Young stars in the arms, old stars in the
  7. 13. galaxy Odd one out
  8. 14. Oval shaped, only old stars
  9. 15. Fusion of H2 and He
  10. 18. in a year
  11. 19. Collapsed core of a high mass star
Down
  1. 1. Bright center of a distant galaxy
  2. 2. Apparent shift
  3. 3. Raisins spread out as the dough rises
  4. 5. Tells us galaxies are moving away
  5. 6. Collapsed neutron star, no light escapes
  6. 8. 9 trillion miles, The distance that light
  7. 12. Loop of gas
  8. 16. Cooler areas on surface
  9. 17. Squeezing atoms together