The Gamma-ray burst GRB 971214 measured in 1998 was at the time thought to be the most energetic event in the observable universe, with the equivalent energy of several hundred supernovae.
O Estourido de Raios Gamma GRB 971214 medido no 1998 considerase que foi ate hoxe en día o evento con máis enerxía acontecido no universo, equivalente a mitos centos de supernovas.