If that is what happened and the process resembles one seen in similar stars called blue supergiants, then it might be a sign that the star is decades or years away from exploding. “If we can ...

The star, known as WOH G64 ... 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 had indeed ...

The observations found that HD 144812 is a rare post-red supergiant orbited by a companion star. The finding was ... or eruptions as seen in the Luminous Blue Variables (LBVs) and other massive ...

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 ...

More information: Raj Kumar et al, Variability study of classical supergiant X-ray binary 4U 1907+09 using NuSTAR, arXiv (2025). DOI: 10.48550/arxiv.2504.02791 Journal information: arXiv ...