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Post by ET_Explorer on Sept 23, 2017 4:49:20 GMT
In September 2017 the discovery of a double supermassive black hole was published in this 380 million light-years spiral galaxy that could be observed using the Very Long Baseline Interferometry (VLBI). These are two black holes encircling one another at intervals of 1.1 light-years, with a total mass of 36 million solar masses. Wikipedia SPACE SIMBAD 2 Monster Black Holes in distant spiral gal....kmz (1.02 KB)
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