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Chemistry, 25.04.2020 05:24, christopherwilde
At the start of the universe, there was just very hot, small particles mixed with light and energy. As these particles cooled, they started to take up more space. These particles started to group together, like rolling a snowball. Over a long period of time, these groups of particles would form stars and galaxies. What other features in space appear as stars are formed or die?
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