The Big Bang Theory

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Across
  1. 4. - What we see in the night sky.
  2. 6. - Device that divides light into a spectrum.
  3. 7. - The universe was created when a tiny point ___.
Down
  1. 1. - Something that is always expanding.
  2. 2. - The Big ___ theory describes the development of the universe.
  3. 3. - The frequency of sound is called the ____ effect.
  4. 5. - What formed first? Matter or the universe?