Unlike most gamma-ray bursts, which are caused by exploding massive stars or the chance mergers of neutron stars, a long gamma-ray burst event dubbed GRB 191019A came from the collision of stars or stellar remnants in the jam-packed environment surrounding a supermassive black hole at the core of an ancient galaxy, suggests an analysis of data from the Gemini South telescope, part of the International Gemini Observatory operated by NSF’s NOIRLab. GRB...
