Star Types

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Across
  1. 5. The first stage of a star's life, and when matter coalesces into a dense region in its core.
  2. 7. Nothing can escape from this star, including light.
  3. 9. When a star is fusing hydrogen to helium in its core.
  4. 10. A star that has run out of fuel.
Down
  1. 1. The stage of a star's life that is a huge explosion.
  2. 2. Made of material left over from supernovas.
  3. 3. A cloud of gas and dust.
  4. 4. A white dwarf that has stopped glowing and emits no heat or light.
  5. 6. When a star runs out of hydrogen, expands, and gets hotter.
  6. 8. Stars with great intrinsic luminosity.