Thor's Helmet in H-Alpha

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Figarou
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Thor's Helmet in H-Alpha

Post by Figarou »

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http://antwrp.gsfc.nasa.gov/apod/astropix.html
Near picture center, the helmet-shaped structure with wing-like appendages is popularly called Thor's Helmet. Cataloged as NGC 2359, the striking nebula is located about 15,000 light-years away in the constellation Canis Major. The helmet is actually more like a cosmic bubble, blown as the wind from the bright, massive star near the bubble's center sweeps through the surrounding molecular cloud. Known as a Wolf-Rayet star, the energetic star is a blue giant thought to be in a brief, pre-supernova stage of evolution.

About the Star Type:

Wolf-Rayet stars (named for their discoverers) are very large, massive stars (stars which are about 20 times bigger than the sun) nearly at the end of their stellar lives. As these stars age, material which the stars have cooked up in their central nuclear furnaces (like carbon and oxygen) gradually reach the surface of the star. When enough material reaches the surface, it absorbs so much of the intense light from the star that an enormously strong wind starts to blow from the star's surface. This wind becomes so thick that it totally obscures the star - so when we look at a Wolf-Rayet star, we're really just seeing this thick wind. The amount of material which the wind carries away is very large - typically, a mass equivalent to that of the entire earth is lost from the star each year.

:jawdrop:
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Post by Ink »

The universe is so cool...
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Post by Fenrir »

I like the eye of god better I can actually tell what it is :)

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"Nam Sibyllam quidem Cumis ego ipse oculis meis vidi in ampulla pendere et cul illi pueri dicerent 'Sibylla Ti cupisne' respondebat illa 'Cupio mortere'."

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Post by Anubis »

wow you got to love that :D
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Post by vrikasatma »

Maybe it's me, but I'm not seeing Thor's Helmet. I'm seeing Anubis, crowned with a skull.

Appropriate set of images, anyway...
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Post by Set »

vrikasatma wrote:Maybe it's me, but I'm not seeing Thor's Helmet. I'm seeing Anubis, crowned with a skull.
I can see both of those things. Cool. 8)
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Post by Anubis »

vrikasatma wrote:Maybe it's me, but I'm not seeing Thor's Helmet. I'm seeing Anubis, crowned with a skull.

Appropriate set of images, anyway...
Really? :D *imagines wereing a skull on head* it dose dosen it? :P
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Post by Fenrir »

after ten minutes of staring I actually saw something.....A jellyfish :cry:
"Nam Sibyllam quidem Cumis ego ipse oculis meis vidi in ampulla pendere et cul illi pueri dicerent 'Sibylla Ti cupisne' respondebat illa 'Cupio mortere'."

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Post by vrikasatma »

It's in the constellation Canis Major, it's a Wolf-Rayet star, I think they should have called it Anubis instead of Thor. Thor's animal was a Goat.
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