Big bang theory vocab

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Across
  1. 3. Forces
  2. 7. Space Telescope
  3. 8. Hole
  4. 10. Bang Theory
  5. 11. Fireball
  6. 12. Lines
Down
  1. 1. Era
  2. 2. Matter
  3. 4. Shift
  4. 5. Density
  5. 6. Fusion
  6. 9. Background Radiation*