4 objects
Cosmic explosions
Supernovae, hypernovae, gamma-ray bursts and kilonovae.
Supernova The death of a star, bright enough for a few weeks to outshine a whole galaxy → Hypernova A supernova pushed to the extreme, as a giant star's core collapses into a black hole → Gamma-ray burst Two beams from a dying star or a stellar collision, briefly the brightest things in the universe → Kilonova Two neutron stars collide, and the debris glows with freshly made gold →