The universe came into existence almost____years ago following a gigantic explosion called the___
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According to the Big Bang theory, the universe began about 13.7 billion years ago. Everything that is now in the universe was squeezed into a very small volume. Imagine all of the known universe in a single, hot, chaotic mass. An enormous explosion—a big bang—caused the universe to start expanding rapidly.
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The uniberse came into ecistence almost 13.8 billion uears ago following a giganyic explosion called big bang.
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