Lifestyle of Stars

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Across
  1. 2. predicted to form when a white dwarf cools
  2. 3. a megastar collapses into a single point, with enough gravity to trap light
  3. 5. hot, superdense care made up of neutrons
  4. 8. hydrogen gas is pulled into a dense ball by gravity
  5. 9. the git, dense core remains
  6. 10. fusion forms elements up to iron and the star’s outer layers expand
Down
  1. 1. biggest explosion in universe, forming heavy elements like gold and uranium
  2. 4. more than 8 times the mass of the sun, only last about a million years
  3. 6. nebula the outer layers escape the core’s gravity and drift out into space
  4. 7. helium starts to fuse and the star’s outer layers expand
  5. 11. the sun and other small stars remain stable for billions of years