sience

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Across
  1. 2. far. why can’t we see most of the universe?
  2. 4. space. What does cosmic background radiation due to the universe?
  3. 6. pressure. Why did the Big Bang happen?
  4. 8. In the Milky Way.
Down
  1. 1. the study of the universe
  2. 3. expansion. what is it called when the universe gets bigger and bigger?
  3. 5. background radiation. radiation from The Big Bang Theory.
  4. 7. Bang theory. The theory of evolution of the world.