Life Cycle of Stars

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Across
  1. 4. Supermassive stars collapse into these, so dense light cannot escape
  2. 6. Sphere of gas and dust that is hot and dense
  3. 9. Space rock that strikes Earth’s surface
  4. 10. Star that is beginning to form; gas and dust begin to spin
  5. 13. star that is stable and glowing brightly
  6. 14. Contains billions of stars, gas, dust, and planets
  7. 15. Birthplace of stars, cloud of gas and dust
  8. 16. All matter that has ever been created
  9. 17. Explosion of a massive star
  10. 18. Highly dense, collapsed star, packed with neutrons
Down
  1. 1. Massive star that has expanded and begins to cool down
  2. 2. Star that has expanded and begins to cool down
  3. 3. Terrestrial or gas sphere that orbits a star
  4. 5. Space rock between Mars and Jupiter
  5. 7. Star that has collapsed and glows white
  6. 8. Clump of gas and ice
  7. 9. Space rock in Earth’s atmosphere
  8. 11. Space rock not between Mars and Jupiter
  9. 12. Our main sequence star
  10. 13. The route a star takes through its life cycle depends on its _____