Chapter 5 Stars and Galaxies

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Across
  1. 1. region in space with tremendous gravity, caused by the collapse of a huge star
  2. 3. process by which particles combine to form a new particle
  3. 4. one of the largest stars, formed when a star expands after using up its hydrogen larger than a red giant
  4. 5. group of stars to which our solar system belongs
  5. 7. star that has expanded after using up its hydrogen
  6. 8. brilliant explosion of a collapsed supergiant
  7. 11. small, white, hot, dense start that remains after a nova
  8. 13. brightness of a star
  9. 15. cloud of gas and dust in space
Down
  1. 2. patterns of stars seen from Earth
  2. 6. everything that exists
  3. 9. distance that light travels in one year
  4. 10. group of billions of stars
  5. 12. very small, very dense star that remains after a supernova
  6. 14. brilliant explosion of a collapsed red giant