The dazzling Blue Ring Nebula puzzled scientists for 16 years — and now they finally understand why

SCIENCE

Scientists have uncovered new evidence in the mysterious fluorescent debris of the Blue Ring Nebula that may explain how the strange structure formed. 

The Blue Ring Nebula harbors a central star, known as TYC 2597-735-1. An unusual ultraviolet ring surrounds the star, which astronomers first…

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