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Galaxies and clusters of galaxies
During the first billion years or so, matter in the explanding universe clumped together to form enormous clouds that eventually collapsed to become galaxies and clusters of galaxies. -
The Universe began
The Universe began between 13 and 14 billion years ago as a dense, hot, massive amount material exploded with violet force. -
The sun began forming
Along the planets in our solar system, the sun bagan forming nearly 5 billion years ago from a large interstellar cloud called a nebula.
