A strange flash in a distant galaxy first looked like a familiar kind of stellar wreckage, the radioactive afterglow of ...

A massive star may have burst, leaving behind two dense, dead cores, which then collided and caused another explosion ...

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

A double explosion, in which a dying star split, then recombined, may be a long-hypothesized but never-before-seen "superkilonova." ...

A mysterious cosmic explosion linked to gravitational waves may reveal a previously unknown type of supernova event - a ...

The combination of a supernova and a kilonova may have produced a rare space explosion that astronomers have never seen ...

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

Columbia Professor Brian Metzger helped other astronomers interpret their observations of the unexpected stellar event.

Learn about what may be the first ever superkilonova ever observed, emitting gravitational waves that hint at the collision ...

A puzzling cosmic blast detected in both light and gravitational waves may hint at a previously unseen type of explosion, ...

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

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