A vast bubble around a dying star is too big to comprehend


The bubble of gas around the red supergiant DFK 52 ALMA/Mark Siebert et al. 2025 A dying star is expelling a vast sphere of dust and gas around it that is about half as wide as our solar system. As… [+3214 chars] Show more...

A red supergiant star is surrounded by a sphere of dust and gas so large there is no known explanation for what produced it

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Alex Wilkins

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