APOD: Thor's Helmet (2022 Dec 20)

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APOD: Thor's Helmet (2022 Dec 20)

Post by APOD Robot » Tue Dec 20, 2022 5:07 am

Image Thor's Helmet

Explanation: Thor not only has his own day (Thursday), but a helmet in the heavens. Popularly called Thor's Helmet, NGC 2359 is a hat-shaped cosmic cloud with wing-like appendages. Heroically sized even for a Norse god, Thor's Helmet is about 30 light-years across. In fact, the cosmic head-covering is more like an interstellar bubble, blown with a fast wind from the bright, massive star near the bubble's center. 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. NGC 2359 is located about 15,000 light-years away toward the constellation of the Great Overdog. This remarkably sharp image is a mixed cocktail of data from narrowband filters, capturing not only natural looking stars but details of the nebula's filamentary structures. The star in the center of Thor's Helmet is expected to explode in a spectacular supernova sometime within the next few thousand years.

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Sa Ji Tario

Re: APOD: Thor's Helmet (2022 Dec 20)

Post by Sa Ji Tario » Tue Dec 20, 2022 12:52 pm

You can see the wings of the helmet, the skin cape and the dreadlocks (in red). Inside the bubble you can see the chaos of emissions from the Wolf-Rayet star

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Re: APOD: Thor's Helmet (2022 Dec 20)

Post by orin stepanek » Tue Dec 20, 2022 2:44 pm

You can see a lot of images in this photo! I can see a man; or a deer;
a dog; and etc! JMO! 8-)
Aw kitty; what are you wearing! :lol2:
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Re: APOD: Thor's Helmet (2022 Dec 20)

Post by Ann » Wed Dec 21, 2022 6:42 am

That's a very fine image of the nebular chaos and maelstrom created by the fury of the central Wolf Rayet star, WR 7 or HD 56925.

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Re: APOD: Thor's Helmet (2022 Dec 20)

Post by johnnydeep » Wed Dec 21, 2022 1:40 pm

Never has an APOD spoken to my weak penchant for pareidolia as this image has. May I present the eidolon of the irate, screaming, flailing, Humpty Dumpty of your nightmares:

thores helmet, aka screaming humpty dumpty.png
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Re: APOD: Thor's Helmet (2022 Dec 20)

Post by VictorBorun » Thu Dec 22, 2022 2:39 am

Betelgeuse has mass of 16.5-19 M☉
WR 7 of Thor's Helmet has mass of 13 M☉ which is less than Betelgeuse

Betelgeuse has 0 to 100,000 years left before going SuperNova
WR 7 of Thor's Helmet has just "few thousand years" left before going SuperNova

Is there a connection between the time left and the bubble helmet blown?