Wandering black hole spotted by pair of X-ray telescopes Cambridge, Mass. (UPI) Oct 5, 2016 - The vast majority of black holes, whether supermassive or intermediate, are found at the centers of galaxies, but occasionally, a few are caught wandering. One of those wanderers is XJ1417+52. Over the last 15 years, astronomers have used two space-based X-ray observatories, ESA's XMM-Newton and NASA's Chandra X-ray Observatory, to image the unanchored black hole. Images confirm ... more

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