A new analysis of two supernova remnants suggests the explosions were not isolated events but came from stellar siblings that once orbited each other. The first star's detonation sent its binary companion hurtling through space, leading to a second explosion after thousands of years.
The findings, based on data from the Fermi Gamma-ray Space Telescope, challenge conventional models of supernova evolution. They imply that binary interactions can produce widely separated remnants that nonetheless share a common origin.
The remnants show distinct spatial and temporal patterns consistent with the proposed scenario. Researchers used gamma-ray observations to trace the remnants' motions and ages, confirming the link.
If validated, the discovery would open new avenues for studying stellar lifecycles in binary systems. It may also help refine estimates of supernova rates and their role in galactic chemical enrichment.
Further observations with X-ray and optical telescopes are needed to confirm the hypothesis. The study adds a new layer of complexity to our understanding of stellar deaths.