Life Cycle of a Star

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Across
  1. 2. core left behind after a supernova
  2. 4. where stars spend most of lives
  3. 5. end product of a white dwarf
  4. 10. red giants but much bigger
  5. 12. birthplace of stars
  6. 15. in main sequence, live for about 20 million years
  7. 16. hot ball of gas
  8. 17. what is life cycle of a star
  9. 18. where stars come from
Down
  1. 1. low-mass stars in main sequence
  2. 3. last stage of a massive star’s life
  3. 6. phase after main sequence
  4. 7. end of a low-mass Red Giants life
  5. 8. low-mass star runs out of fuel
  6. 9. within the protostar
  7. 11. forms inside nebula
  8. 13. form when very massive stars collapse at end of life cycle
  9. 14. determines what happens to star after living in main sequence