Sun and Stars

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Across
  1. 2. Element produced when hydrogen atoms fuse in stars.
  2. 5. The force that pulls matter together and keeps planets orbiting stars.
  3. 6. A type of star that lives longer and ends as a white dwarf.
  4. 9. A property of stars that can indicate temperature.
  5. 11. The most abundant element in stars and the main fuel for fusion.
  6. 12. Force created by particles pushing outward inside a star.
  7. 13. The center of a star where fusion occurs.
  8. 14. Layer of the Sun where energy travels outward as electromagnetic radiation.
  9. 15. A type of star that burns hotter, brighter, and dies more violently.
  10. 16. Giant cloud of gas and dust where stars form.
  11. 17. The outward movement of energy through waves in the Sun.
  12. 18. A small, hot, and dense remnant left after some small die.
Down
  1. 1. Determines the color and brightness of a star.
  2. 3. The stage in a star’s life when fusion first begins.
  3. 4. The process in which small atomic nuclei combine to release energy.
  4. 7. The hottest color of visible stars.
  5. 8. Layer of the Sun where heat moves through rising and sinking currents.
  6. 9. The transfer of heat by moving currents of gas or liquid.
  7. 10. The explosive death of a high-mass star.
  8. 16. An extremely dense object formed after a massive star explodes.