HR Diagram

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Across
  1. 4. Huge, cool stars
  2. 5. Like the sun, most stars fall here
  3. 6. Explosion of a large star
  4. 7. The color of the hottest stars
  5. 8. So much gravity, atoms collapse
Down
  1. 1. Small, hot stars
  2. 2. So much gravity, light can't escape
  3. 3. This means brightness
  4. 4. The color of the coolest stars