The Stars

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Across
  1. 2. There are ______ different types of stars.
  2. 6. the color of our sun
  3. 8. a group of stars that are bound together by gravity
  4. 11. violent explosion of a massive star
  5. 13. M-stars have the lowest _________.
  6. 14. a name for small stars
  7. 17. O-stars have the highest _________.
  8. 18. Stars with average heat and average size are known as ________ stars.
  9. 19. the state of matter of stars
Down
  1. 1. the color of cooler stars
  2. 3. the energy source of stars is _____ fusion
  3. 4. this is what neutron stars are made of
  4. 5. a very famous constellation
  5. 7. In ROYGBIV, the I stands for...
  6. 8. Solar flares can disrupt _________ on Earth.
  7. 9. the reason light can not escape black holes
  8. 10. Sunspots appear to look ______.
  9. 12. a contracting cloud of gas that forms a star
  10. 15. A cluster that is very dense, stars are very close together.
  11. 16. Red dwarves are the most _____ stars in the universe.