This fundamental constant of nature remains the same even near a black hole

The fine-structure constant determines the strength of electromagnetic interactions

orbits around supermassive black hole in Milky Way

A gang of stars circles the supermassive black hole at the center of the Milky Way (orbits illustrated). Scientists observed five such stars to show that the fine-structure constant is the same near a black hole as it is on Earth.

ESO/L. Calçada/ (CC BY 4.0)

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