NASA used an orbiting observatory called WISE that sees the sky in infrared light.
It recorded the yellow arc as its powerful stellar winds push the gas and dust out of the way.
Astronomers believe the star, labelled Zeta in the constellation of Ophiuchus the snake charmer, once revolved around another star.
But its companion exploded as a violent supernova, flinging Zeta out into deep space."
via Telegraph /continue reading

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