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 ...

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

Astronomers have observed what they are calling a new type of supernova, which has provided an unparalleled glimpse into what happens deep within a star just before it explodes. A study detailing the ...

"The supernova was named 'supernova Hope' since it gives astronomers hope to better understand the universe’s changing expansion rate." When you purchase through links on our site, we may earn an ...

A new discovery about what happens when a supernova – an exploding star – and a black hole collide could change the way scientists understand the lives and deaths of stars. The finding was the first ...

A red giant star and white dwarf orbit each other in this animation of a nova similar to T Coronae Borealis. (NASA/Goddard Space Flight Center) A rare nova explosion will soon be visible in the ...

For more than a century, astronomers have known that some “new stars” flaring into view are not births at all but violent ...

In addition to revealing characteristics of mysterious particles called neutrinos, the massive DUNE experiment could help astronomers find a supernova right as it begins. At this very moment, ...

An explosion in space so massive you'll be able to look up and see it in the night sky without a telescope could happen "any day now," a NASA expert said Wednesday. The stellar burst, called a nova, ...