Big bang thoery

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