Thor’s Helmet

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Behold: NGC 2359 a cosmic cloud about 15,000 light-years away in the constellation Canis Major.commonly known as ‘Thor’s Helmet’ on account of its winglike spurs, 30 light years across. To wit:

In fact, the helmet is more like an interstellar bubble, blown as a fast wind from the bright, massive star near the bubble’s centre inflates a region within the surrounding molecular cloud. Known as a Wolf-Rayet star, the central star is an extremely hot giant thought to be in a brief, pre-supernova stage of evolution….The remarkably detailed image is a mixed cocktail of data from broadband and narrowband filters that captures natural looking stars and the glow of the nebula’s filamentary structures. It highlights a blue-green colour from strong emission due to oxygen atoms in the glowing gas.

(Image: Ignacio Diaz Bobillo)

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6 thoughts on “Thor’s Helmet

    1. rotide

      Don’t forget that what you are seeing is getting more and more ancient as everything in the universe moves away from everything else. Eventuallly in the far flung future, we won’t be able to see anything other than our local galaxy

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