Big Bang Theory

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Across
  1. 2. symbol h
  2. 5. small particles that made up the universe
  3. 8. universal force of attraction
  4. 9. Made up of all matter in space
Down
  1. 1. mass slightly greater than a proton
  2. 3. negatively charged particles of an atom
  3. 4. Suggests our universe
  4. 6. static in the airwaves
  5. 7. symbol he
  6. 10. used to study light