Chapter 25 vocab

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Across
  1. 1. hole densest object that light can't penetrate
  2. 6. sudden brightening of a star
  3. 11. pair of stars that orbit each other
  4. 13. developing star
  5. 14. 90% of stars the H-R diagram shows
  6. 15. a spinning neutron star
  7. 16. SUPER large stars
  8. 17. galaxies are retreating away from us
  9. 18. large groups of gas, dust, and stars
  10. 19. remains of low/medium mass stars
  11. 20. clusters groups a galaxies
Down
  1. 2. how bright a star actually is
  2. 3. very bright stars in the top right of H-R
  3. 4. theory of how the universe began
  4. 5. stars that get brighter and dimmer
  5. 7. end of a stars life that creates and explosion
  6. 8. relationship ofstars and temp
  7. 9. remnants of a supernova
  8. 10. magnitude stars brightness from Earth
  9. 12. used to designate a grouping of stars