stars

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Across
  1. 3. the brightest of star from earth
  2. 5. the actual brightest of a star
  3. 7. the distance that it takes light to travel
  4. 9. the stars surface temperature and absolute magnitude
  5. 10. the small star left over from an old star
  6. 11. actual brightness of an object
Down
  1. 1. a star that collapsed under gravity and now has only neutrons
  2. 2. a collection of stars
  3. 4. a spectrum that measures the electro radiation
  4. 6. space and all matter
  5. 8. a collapse of a big star that effects the solar system
  6. 12. a large cloud of dust