International researchers say the Jellyfish nebula may preserve evidence of two separate stellar explosions, not just one. According to the study, the star linked to the nebula may once have been part of a binary system with a companion that went supernova roughly 100,000 years earlier.
If confirmed, the finding would mark what researchers describe as the first known case of a binary star system in which both stars have ended their lives as supernovas. That possibility makes the Jellyfish nebula especially important for astronomers studying how massive stars evolve and how paired stars can influence each other's fate.
The new interpretation suggests the nebula's history may be more complex than previously understood. Instead of tracing a single dramatic explosion, the region could reflect the aftermath of two supernovas separated by a long interval, with the earlier blast involving the partner star and the later one creating the remnant now associated with the Jellyfish nebula.
Scientists will likely need further observations and analysis to test whether this scenario holds up. Even so, the research points to the Jellyfish nebula as a potentially rare natural record of how binary stars can both reach catastrophic ends, leaving behind clues across the same area of space.
