To estimate how close a supernova would have to be to cause serious damage to Earth, we must first look at a supernova's ...

Massive stars about eight times more massive than the sun explode as supernovae at the end of their lives. The explosions, ...

A star that winked out of view could be a “failed supernova,” a stellar explosion that petered out instead of fully detonating, a new study reports. If real, the failed supernova would mark the birth ...

The outward force from its fusion can no longer counteract the star's powerful gravity, and the star collapses in on itself.

Several telescopes used to observe the supernova SN Zwicky which was magnified nearly 25 times by a foreground galaxy acting ...

Astronomers have witnessed a rare cosmic event, where a massive star in the Andromeda galaxy (M31) has transformed directly into a black hole, without the usual supernova explosion. The phenomenon ...

This is not carelessness, but the possible discovery of a rare stellar event in the Andromeda galaxy. A red supergiant star ...

This one—called “Parker’s Star,” the remnant of the supernova SN 1181, named for the year it appeared in Earth’s skies—lies ...

Betelgeuse’s future supernova won’t harm Earth, but close cosmic explosions could strip our ozone, risking life. Gamma-ray ...

Astronomers studying the site of a supernova seen 843 years ago have captured an image of the strange filaments left behind by the stellar explosion.