“What we do know, is that one such supernova seen in the same galaxy in 1987 to every astronomer’s surprise was a blue supergiant that had exploded. The Hubble Space Telescope soon revealed it ...

The star, known in modern times as Sanduleak 69-202, is a blue supergiant 25 times more massive than the Sun. Such explosions distribute all the common elements such as Oxygen, Carbon, Nitrogen ...

This weird behaviour indicates to astronomers that something big is about to happen: Betelgeuse, the nearest red supergiant star to Earth, could soon explode as a supernova. When Betelgeuse does ...

When Betelgeuse, a red supergiant star in the constellation Orion, eventually goes supernova—likely within the next 100,000 years—the night sky will light up as if a second sun appeared ...