Double Cosmic Explosion Gives Birth to Unprecedented ‘Superkilonova’ - Gizmodo

Double Cosmic Explosion Gives Birth to Unprecedented ‘Superkilonova’  GizmodoPossible "Superkilonova" Exploded Not Once But Twice  CaltechAstronomers may have spotted the 1st known 'superkilonova' double star explosion  SpaceStrange Cosmic Blast May Be First-Ever Superkilonova Observed  Scientific AmericanDouble cosmic explosion may be the first-ever confirmed 'Superkilonova'  Earth.com