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

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

Astronomers find an explanation for the fastest stars in the galaxy while uncovering a new mechanism for a supernova explosion. Credit: Technion illustration Astronomers call a special kind of ...

WASHINGTON, Aug 14 (Reuters) - Astronomers have observed the calamitous result of a star that picked the wrong dance partner. They have documented what appears to be a new type of supernova, as ...

WASHINGTON (Reuters) -The explosive death of a star - a supernova - is among the most violent cosmic events, but precisely how this cataclysm looks as it unfolds has remained mysterious. Scientists ...

Scientists using the Chandra X-ray telescope have uncovered new details about the famous supernova remnant Cassiopeia A. When you purchase through links on our site, we may earn an affiliate ...