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About 13 billion years ago, when the Universe was young, the first stars formed, they would have been massive and had very short life spans. When this star died, it would have become a supernova, and seeded the universe with the first metals, leaving behind a super dense object called a black hole.

As other stars formed, they became gravitationally bound to this black hole and the Milky Way Galaxy was born.

Over billions of years it became larger and larger until it became what it is now, a galaxy containing between 100 -> 400 billion stars.

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13y ago

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