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Astronomers Just Solved the Mystery of the Universe's Missing Matter
A new study reveals that 76% of all ordinary matter exists in the form of hot intergalactic gas.
Astronomers from the Center for Astrophysics Harvard & Smithsonian (CfA) and the California Institute of Technology (Caltech) have tracked down the universe’s “missing” matter. By studying FRBs, scientists confirmed that around 76% of all baryonic matter exists in the IGM, 15% in galaxy halos, and another small fraction in stars or cold galactic gas. “Baryons are pulled into galaxies by gravity, but supermassive black holes and exploding stars can blow them back out—like a cosmic thermostat cooling things down if the temperature gets too high,” said Connor, who is the lead author of the study.
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