The Sun and Stars

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Across
  1. 7. A group of stars that makes a picture in the sky.
  2. 10. Which layer of the Sun gives it its red color?
  3. 11. What is the next phase in the Sun's life cycle?
  4. 13. What is the hottest part of the Sun?
Down
  1. 1. What are pockets of cooler gas on the Sun's surface that we can see?
  2. 2. The force that squeezes a nebula together to become a star.
  3. 3. The Sun is the __________ star to Earth.
  4. 4. Which layer of the Sun gives off light?
  5. 5. Average size stars will end their life as what?
  6. 6. What process does the sun use to produce light and heat?
  7. 8. What gas does nuclear fusion produce?
  8. 9. What type of star is our Sun?
  9. 12. Really large stars will end their life as what?