facts/gk on Instagram: "Three supermassive black holes are on a slow motion collision course A rare trio of merging galaxies called J121/1219+1035 hosts three actively feeding, radio-bright supermassive black holes, according to a team of astronomer. The J1218/1219+1035 system is located approximately 1.2 billion light-years away from Earth. It contains three interacting galaxies whose central supermassive black holes are all actively accreting material and shining brightly in the radio regime.