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.

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

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

NASA has released its longest-ever time-lapse from the Chandra X-ray Observatory, capturing the expanding remains of Keplers ...

A new video shows the evolution of Kepler's Supernova Remnant using data from NASA's Chandra X-ray Observatory captured over ...

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

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

NASA’s Chandra Observatory reveals a 25-year time-lapse of Kepler’s Supernova Remnant. Glowing debris expands at different ...

Astronomers have spotted AT2025ulz, a rare dual explosion — a supernova and a kilonova — that may be the first-ever observed ...

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