the sun fusion at work

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Across
  1. 5. the study of the absorption and emission of light and other radiation
  2. 7. the second of the suns 3 main layers of atmosphere
  3. 8. one million tons of TNT
  4. 9. essentially a fusion reactor that is stabilized by gravity
  5. 10. object that moves around a larger object
  6. 13. used to classify something or suggests that it can be classified
  7. 14. destroy obliterate
  8. 16. describes the atomic radius trend that the elements experience
  9. 17. long chain of protein subunits
  10. 18. like a parabola a part of one
  11. 19. an arrival or a large entry of something
  12. 20. area where the magnetic field is about 2500 times stronger than earth's
Down
  1. 1. energy from the sun that is converted into thermal or electrical energy
  2. 2. involving or accompanied by the emission of radiation
  3. 3. surface of the sun
  4. 4. relating to the production of electric current and the junction of 2 substances exposed to light
  5. 6. a chemical process in which a substance reacts rapidly with oxygen and gives off heat
  6. 11. mixture of gases that surround earth
  7. 12. the production and discharge of a gas or radiation
  8. 15. an electrical discharge