green pea galaxies
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‘Green Pea’ Galaxies May Have Reheated The Universe After Cosmic Dark Age
Swiss scientists may have found the answer to a troubling mystery about the early evolution of our universe. After the Big Bang, the universe cooled down for a billion years in a kind of cosmic dark age. But then it mysteriously reheated. Electrons and protons that had been happily joined in hydrogen atoms were ripped…