Stars

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Across
  1. 2. The leftover core of a star
  2. 4. A vortex nothing can escape
  3. 5. A rapidly spinning star
  4. 6. A molecular cloud composed of dust and gas
  5. 7. High mass star's transition from the main sequence
Down
  1. 1. When stars fuse hydrogen to helium
  2. 3. When stars fuse helium to carbon
  3. 4. A white dwarf that lost its energy
  4. 7. A large explosion resulting in end of a supergiant
  5. 8. An early star