Big Bang Theory

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Across
  1. 1. We know the universe is expanding because of the _____ shift.
  2. 3. __________ universe is a universe that will re-collapse.
  3. 6. The universe is 12 - 14 ___________ years old.
  4. 7. ________ universe is a universe that keeps expanding.
Down
  1. 1. We can measure _____________ that was left behind from the big bang.
  2. 2. The big bang started from on single ________.
  3. 4. Edwin ________ was the first scientist to realize there were more galaxies outside of our own.
  4. 5. ________ universe is a universe that doesn't get any wider.