In a strange turn of events, a supernova birthed twin baby neutron stars that merged to make a powerful kilonova.

Astronomers may have discovered the first example of an explosive cosmic event called a "superkilonova," in the form of a ...

Astronomers report a strange cosmic blast that looked like a kilonova, then behaved like a supernova, hinting at a possible first “superkilonova” and leaving scientists debating how stars truly die.

One such superkilonova candidate event, named AT2025ulz, was observed in 2025; LIGO and Virgo first spotted gravitational ...