The Big Bang’s Biggest Mystery? Dark Matter May Have Been “Red Hot” at Birth

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The Big Bang’s Biggest Mystery? Dark Matter May Have Been “Red Hot” at Birth



A research team from the University of Minnesota Twin Cities and Université Paris-Saclay is questioning a theory about dark matter that has shaped cosmology for decades. Their new work suggests that this mysterious substance may have been “incredibly hot” – moving at nearly the speed of light – when it first formed in the early Universe. The findings were published in Physical Review Letters, the leading journal of the American Physical Society. The study offers fresh insight into how the Universe began and expands the range of possibilities for what dark matter is and how it behaves alongside ordinary matter.

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