The blast may have been a kilonova — a type of neutron star merger — in the wake of a more traditional supernova.

It's the last clearly observed supernova in the Milky Way, Gassel said.

Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.

Scientists have detected the most distant supernova ever seen, exploding when the universe was less than a billion years old.

Kepler's supernova remnant is extremely exciting for astronomers – a rare example of a supernova for which we have a clear ...

NASA has captured 25 years of observations from the Chandra X-ray Observatory showing the aftermath of Kepler’s Supernova, a ...

This article (originally published Aug. 13, 2025) has been updated to include new text and illustrations featured in the Jan.

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

"Our scenario describes all the evolutionary phases of the supernova with great precision." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. An ...

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

In 1181 AD, a bright "guest star" was observed to linger in the sky for around six months. Nearly 850 years later, the likely ...

The new paper argues that, in SN 1181, the first phase of the supernova fizzled out and left behind an unusually active ...