APOD: The Fairy of Eagle Nebula (2013 Sep 29)

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APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby APOD Robot » Sun Sep 29, 2013 4:06 am

Image The Fairy of Eagle Nebula

Explanation: The dust sculptures of the Eagle Nebula are evaporating. As powerful starlight whittles away these cool cosmic mountains, the statuesque pillars that remain might be imagined as mythical beasts. Pictured above is one of several striking dust pillars of the Eagle Nebula that might be described as a gigantic alien fairy. This fairy, however, is ten light years tall and spews radiation much hotter than common fire. The greater Eagle Nebula, M16, is actually a giant evaporating shell of gas and dust inside of which is a growing cavity filled with a spectacular stellar nursery currently forming an open cluster of stars. The above image in scientifically re-assigned colors was released in 2005 as part of the fifteenth anniversary celebration of the launch of the Hubble Space Telescope.

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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Boomer12k » Sun Sep 29, 2013 5:39 am

More like a "LEECH" Fairly, biting into the big, giant Slug thingy.....

Awesome picture though....certainly worth more than a thousand words...

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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Bondo Cain » Sun Sep 29, 2013 11:21 am

So tell me exactly, how does 'dust' evaporate?

Sounds like something Hoover and Dyson could make a killing on!
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Ann » Sun Sep 29, 2013 12:04 pm

The hard ultraviolet radiation and strong stellar winds from massive stars "cook" the dust into much smaller particles.

It would be sort of like dumping your house into a nuclear reactor until it came out in very, very small pieces.

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Last edited by Ann on Sun Sep 29, 2013 3:09 pm, edited 1 time in total.
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Coil_Smoke » Sun Sep 29, 2013 12:26 pm

Is it just me...or does that look like a capacitor in the top center of the column :?:
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby neufer » Sun Sep 29, 2013 12:37 pm

Image
Ann wrote:
Bondo Cain wrote:
So tell me exactly, how does 'dust' evaporate?

The hard ultraviolet radiation and strong stellar winds from massive stars "cook" the dust into much smaller particles. It would be sort of dumping your house into a nuclear reactor until it came out in very, very small pieces.
http://en.wikipedia.org/wiki/Tinkerbell wrote:
<<Tinker Bell, is a fictional character from J. M. Barrie's 1904 play Peter Pan . Fairies can enable others to fly by sprinkling them with fairy dust. Tinker Bell was a fairy who mended pots and kettles, like an actual tinker. Her speech consists of the sounds of a tinkling bell, which is understandable only to those familiar with the language of the fairies. In the original stage productions, she was represented on stage by a darting light "created by a small mirror held in the hand off-stage and reflecting a little circle of light from a powerful lamp" and her voice was "a collar of bells". However, a Miss 'Jane Wren' was listed among the cast on the programmes as playing Tinker Bell: this was a joke which fooled HM Inspector of Taxes who sent Jane Wren a tax demand.
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby zbvhs » Sun Sep 29, 2013 1:57 pm

What is "dust"? Is it the microscopic wind-blown dirt we think of or is it something larger, up to say, planet-size or bigger?
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby rstevenson » Sun Sep 29, 2013 2:08 pm

zbvhs wrote:What is "dust"? Is it the microscopic wind-blown dirt we think of or is it something larger, up to say, planet-size or bigger?

Very, very, very small particles. Ranging from a few molecules up to maybe a tenth of a millimeter in size. Much of it is mineral in nature, some of it is organic pre-cursor. It comes out of stars that have exploded or it agglomerates from single atoms. It is what our Sun, the Solar System, and we are made of -- in the words of the 60s song, "We are stardust."

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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby geckzilla » Sun Sep 29, 2013 2:10 pm

zbvhs wrote:What is "dust"? Is it the microscopic wind-blown dirt we think of or is it something larger, up to say, planet-size or bigger?


The word is used to refer to all sorts of different matter but it's all very small stuff. Literally dust-sized granules of small stuff or even smaller, down to molecules of gas. I think sometimes it's easy to confuse the dust and the gas. Either way, it's very similar to clouds on Earth which look sharply defined from afar but if you found yourself inside one you might not even realize it was there. Might be pretty dark inside a denser cloud, though. Hmm.

And shucks, Rob beat me to it.
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Psnarf » Sun Sep 29, 2013 5:06 pm

Uh, WOW! There's a lot going on in there.
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Chris Peterson » Sun Sep 29, 2013 8:03 pm

Bondo Cain wrote:So tell me exactly, how does 'dust' evaporate?

Generally, in this context, the term is synonymous with "dissipate". Radiation pressure and charged particle winds can inject enough energy into a dust cloud that it dissipates against its internal gravitational attraction.
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby neufer » Sun Sep 29, 2013 10:05 pm

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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Phil T » Mon Sep 30, 2013 7:37 am

Hey,
Anybody noticed the Cocker Spaniels head in the middle of the three star triangle just near the top. I never realised Cocker Spaniels were mythical until now :lol2:
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby BMAONE23 » Mon Sep 30, 2013 2:10 pm

The top portion looks like a bull rider from the top down.
The dark part is the rider and the illuminated part is the head and bopy of the bull
Similar to this but slightly rotated
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Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)

Postby Boomer12k » Tue Oct 01, 2013 5:33 pm

This is SOOOO Cool as a THUMBNAIL picture...I can then see a woman standing there in a dress with a belt, and a Raven on her left arm, and behind the Raven are her wings....
Very cool...but I only saw that when in a smaller thumbnail view... :D

Awesome.
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