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Big Bang Theory

Across
The universe didn't actually explode: instead it quickly _______.
Einstein’s theory of ___ helped to shape our understanding of the Big Bang.
Matter clumped together and formed planets and stars because of ______.
Who discovered red tilt shift and helped to create the Big Bang Theory?
Down
After the Big Bang, the universe was extremely hot and _______.
Through a radio satellites, scientists accidentally discovered background ____ in 1964
What is another element that was created during the Big Bang?
What is one element that was created during the Big Bang?