Universe vocab

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Across
  1. 2. The Milky Way is a
  2. 6. Study of CMB
  3. 8. Protons, neutrons, electrons
  4. 9. The universe is always
Down
  1. 1. One of the first chemicals in the universe discovered
  2. 3. No charge
  3. 4. Negative charge
  4. 5. Microwave
  5. 7. Theory
  6. 10. Positive charge