A record-breaking gamma-ray burst was observed thanks to a series of space and ground-based telescopes on October 9, 2022. The fast global alert system existing among astronomical organizations made it possible to use several instruments to detect the event and its consequences over the next few days. Cataloged as GRB221009A, it’s already been called the gamma-ray burst of the century because it was very powerful even by the standards of these extremely energetic events. It may have been caused by a supernova that gave birth to a black hole but studies of the information collected have just begun.