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The Big Bang

Scientists have gathered a lot of evidence and information about the universe. They have
used their observations to develop a theory called the Big Bang. The theory states that
originally all the matter in the universe was concentrated into a single incredibly tiny point.
This began to…

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The light from other
galaxies is red-shifted. The other galaxies are moving away from us.

The further away the The most likely explanation is that the whole universe
galaxy, the more its is expanding. This supports the theory that the start
light is red-shifted. of the universe could…


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