https://www.sciencedaily.com/releases/2023/06/230601155742.htm
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6/1/23 at 10:12pm
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Science Daily
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After the Big Bang, the universe expanded and cooled sufficiently for hydrogen atoms to form. In the absence of light from the first stars and galaxies, the universe entered a period known as the cosmic dark ages. The first stars and galaxies appeared several…
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