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14 billion years ago dust and gases collect, in which dense heat and massive amounts of materials exploded causing the Big Bang, in which galaxies form.
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The Big Bang Theory
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About 13 Billion Years Ago many galxaies begin to form and seperate from each other.
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About 10 Billion Years Ago the Milky Way forms , which is our galaxie which includes the sun and all the planets.
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Around 5 Billion Years Ago Earht, and the other 8 planets form.
