The Big Bang

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Across
  1. 4. study of light
  2. 7. protons, electrons and neutrons
  3. 10. lightwaves that make it seem stars are getting farther
Down
  1. 1. made up of everything
  2. 2. ligthwaves that make it seem stars are getting closer
  3. 3. one of the 3 first elements made following the Big bang
  4. 5. big ball of gas
  5. 6. left over radiation from the Big bang
  6. 8. space
  7. 9. theory of how the universe began