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Dr. Sarah Burke-Spolaor and team investigate a missing supermassive black hole

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Dr. Sarah Burke-Spolaor and team investigate a missing supermassive black hole in the center of galaxy cluster Abell 2261.
 
The team, including GWAC researcherDr. Sarah Burke-Spolaor,used NASA’s Chandra X-ray Observatory and the Hubble Space Telescope to scope out an area in the center of a distant galaxy cluster where a supermassive black hole should be—but isn’t.