After two decades of observations, a supermassive black hole at the center of a nearby galaxy was discovered spinning, bolstering Albert Einstein's century-old theories of general relativity, an astrophysicist told Fox News.
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After two decades of observations, a supermassive black hole at the center of a nearby galaxy was discovered spinning, bolstering Albert Einstein's century-old theories of general relativity, an astrophysicist told Fox News.