Tuesday, July 14, 2026

The Oldest Stars in the Galaxy Just Weighed In on One of Cosmology's Biggest Arguments

Omega Centauri, the largest and brightest globular cluster in our sky, holding roughly 10 million ancient stars. Clusters like this are home to some of the oldest stars in the Galaxy, the very objects this new study used to test the age of the universe itself (Credit : NASA/ESA)

Astronomers have measured the ages of over a hundred and fifty thousand ancient stars scattered across our Galaxy, and found the oldest of them is just the age it should be if the standard picture of the universe is correct. That simple agreement quietly undermines one of the leading attempts to explain a stubborn mystery, and hints that the real answer to the Hubble tension may lie somewhere else entirely.



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