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

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

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

NASA has released an unprecedented time-lapse video showing the evolution of Kepler’s Supernova Remnant, a cosmic relic of a ...

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

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

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

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

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.

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

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