Radio view of rare supernova tracks dying star's final decade

Radio view of rare supernova tracks dying star's final decadeby Russ BahorskyCharlottesville VA (SPX) Jan 30, 2026As from a rare kind of stellar explosion known as a Type Ibn supernova, giving them an unusually detailed look at the final decade in the life of a massive star before it died. Type Ibn supernovae occur when a massive star explodes into a dense envelope of helium-rich gas that it had already thrown off. When the supernova's shockwave plows into this gas, the interaction produces strong radio waves that carry information about the star's mass-loss history. The new work shows that radio observations provide a powerful tool for probing the deaths of massive stars across the universe. A larger sample would also help clarify what kinds of stars produce Type Ibn events and how binary interaction influences their final fates.