A team of astronomers using the Hubble telescope has studied a mid-sized black hole in the spectacular edge-on galaxy ESO 243-49 and found that it is surrounded by a cluster of young stars. Circle identifies the black hole HLX-1 in the galaxy ESO 243-49 (NASA / ESA / S. Farrell et al) The discovery, published in the Astrophysical Journal Letters, also suggests that the black hole, called HLX-1, formed in the core of a now-disintegrated dwarf galaxy. HLX-1...
