The Sun

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Across
  1. 2. jets of plasma
  2. 6. making of heavier elements
  3. 7. eventually a planet
  4. 8. photons travel through packed plasma
  5. 9. accumulation of particles
  6. 11. spheroid object of extremely hot gaseous material
  7. 14. glowing plasma near polar regions
  8. 17. stream of charged particles
  9. 18. creation of the universe
  10. 19. movement of hotter and cooler air
  11. 20. Studies the Sun
  12. 21. bright gaseous eruption from the Sun
Down
  1. 1. southern lights
  2. 3. cool regions of the Sun
  3. 4. transition between photosphere & corona
  4. 5. could be a planet soon
  5. 10. part of a star outward into space
  6. 12. northern lights
  7. 13. outer shell of a star
  8. 15. eventually a star
  9. 16. large EMR