The nearby radio galaxy M87, located 55 million light-years from the Earth and harboring a black hole 6.5 billion times more massive than the Sun, exhibits an oscillating jet that swings up and down with an amplitude of about 10 degrees, confirming the black hole's spin. The study, which was headed by Chinese researcher Dr. CUI Yuzhu and published in Nature on Sept. 27, was conducted by an international team using a global network of radio telescopes. Through extensive analysis of telescope data from 2000–2022, the research team revealed a recurring 11-year cycle in the precessional motion of the jet base, as predicted by Einstein's General Theory of Relativity.
https://www.miragenews.com/m87-radio-galaxy-monitoring-confirms-black-hole-1093045/#miragenews
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