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An important discrepancy in measurements of the universe’s acceleration has theorists wondering whether we’ve gotten something fundamentally wrong in our understanding of the history of the universe.

One currently unexplained cosmological mystery is the “Hubble tension,” where various measurements of the universe’s expansion seem to disagree. As the story surrounding this tension gets murkier, others have begun to come up with new ideas that could explain it.

“Beyond the Higgs, we haven’t discovered anything new,” physicist Anže Slosar at Brookhaven National Laboratory told Gizmodo. “Any kind of new tension is exciting. We want to see where the new physics will appear.”

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Category: Science