This is the First Pair of Sibling Supernova Remnants

This is a multiwavelength image of the Jellyfish Nebula, a supernova remnant about 5,000 light years away. It's made from optical, infrared, and UV observations. The Jellyfish Nebula is the large structure on the right, but the image also shows an arching filament of gas in purple. That filament is actually part of another supernova remnant about the same distance away. New research shows that the pair of remnants may be siblings. Image Credit: NASA Goddard Space Flight Center and M. Michailidis et al. 2026; optical: DSS; infrared: NASA/WISE/JPL-Caltech/UCLA; ultraviolet: NASA/Swift

Astrophysicists have found what is likely the very first pair of sibling supernova remnants. One is the well-known Jellyfish Nebula, and the other was long thought to be hidden in the bright glare from the Jellyfish. The pair are connected by a bright filament of gas.

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