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 ...

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

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 ...

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

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

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

A puzzling cosmic blast detected in both light and gravitational waves may hint at a previously unseen type of explosion, challenging astronomers to rethink how neutron stars are born and collide.

Astronomers announce evidence of a rare and unprecedented cosmic event that might represent a new type of violent explosions ...

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

When the most massive stars reach the ends of their lives, they blow up in spectacular supernova explosions, which seed the ...