The orgin of the universe

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Across
  1. 4. theories about the start and end of the universe.
  2. 6. Analogy to universal expansion
  3. 8. Our universe
Down
  1. 1. One way how to calculate the age of the universe
  2. 2. The overheating of the universe
  3. 3. Radiation coming from all directions in space.
  4. 5. The theory of how the world was created
  5. 7. A group of planets,stars,and moons