Star Lifecycle and HR Diagram (no spaces in your answers)

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Across
  1. 6. The color of the hottest stars
  2. 8. The heaviest element made in a star's core
  3. 9. The next stage of the Sun's life
  4. 12. The nebula collapses and forms this
  5. 13. When a star puffs off its outer layers
  6. 15. The clouds of gas and dust where stars are formed
  7. 16. The color of the coldest stars
Down
  1. 1. >8 solar mass stars get big and cool down
  2. 2. What the y-axis of the HR diagram measures
  3. 3. The final stage of a sun-like star's life
  4. 4. Huge explosion cause by a >8 solar mass star
  5. 5. What the x-axis of the HR Diagram measures
  6. 7. How the largest stars end their lives
  7. 10. When the star's core begins hydrogen fusion
  8. 11. The exposed core of a star made of C and O
  9. 14. The most dense star. Only about 10 miles wide