Astronomers have detected a mysterious and extremely bright event, named AT2022tsd, in a galaxy approximately 4.4 billion light-years away. AT2022tsd is a fast and luminous extragalactic optical transient with rapid flares. Image credit: Ho et al., doi: 10.1038/s41586-023-06673-6. AT2022tsd was first spotted on September 7, 2022 by astronomers using the Zwicky Transient Facility. Nicknamed the ‘Tasmanian Devil,’ the event is a Luminous Fast Blue...
