Astronomy Crossword Puzzle

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Across
  1. 3. a star whose brightness changes
  2. 6. the sun is overhead at noon
  3. 7. a temporary dark spot on the sun
  4. 8. the sun is further south or north of the sky
  5. 9. Collection of stars orbiting common center of mass
  6. 10. billions of stars in our galaxy
  7. 11. Star ending
  8. 12. Birth of a new star
Down
  1. 1. massive black hole
  2. 2. vast collection of stars, gas, and planets
  3. 4. two stars close or orbiting each other
  4. 5. pattern of stars in the sky