what is universe?????
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Universe is a place where planets, stars, galaxies, dust clouds, light etc exist.
- It contains billions of galaxies, each containing millions or billions of stars
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all existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
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