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What is Galaxy vs Universe Explained about?

A galaxy is a system of stars, gas, and dust held together by gravity, while the universe contains all matter and space, including galaxies. A galaxy ranges in size from millions to trillions of stars, and there are many galaxies in the universe. The universe has expanded from a dense, hot phase called the Planck epoch over 13.75 billion years according to the Big Bang Theory.

Author

Lyra

Language

EN