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Astronomers close in on what ended the Cosmic Dark Age
Original: What ended the 'Cosmic Dark Age'? Astronomers say they're closer than ever to an answer.
Astronomers report they are closer than ever to explaining what ended the Cosmic Dark Age, the early era after the Big Bang when the universe was filled with cold gas and no visible stars. Researchers are examining how the first stars and galaxies formed and ionized the gas, a process known as reionization, using new observations to piece together when the universe first lit up.
Why now: New research claims significant progress on a long-standing mystery about the universe's first stars and reionization
astronomersCosmic Dark Ageuniversereionization
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- What ended the 'Cosmic Dark Age'? Astronomers say they're closer than ever to an answer. · Live Science
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