End Of Universe Theories

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Across
  1. 1. a theory on how the Universe will end( Freeze )
  2. 3. a theory on how the Universe will end ( Rip )
  3. 4. to get small
  4. 6. a theory on how the universe began
Down
  1. 2. the act of getting bigger/larger
  2. 5. the biggest something can get