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APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 4:06 am
by APOD Robot
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)
Posted: Sun Sep 29, 2013 5:39 am
by Boomer12k
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)
Posted: Sun Sep 29, 2013 11:21 am
by Bondo Cain
So tell me exactly, how does 'dust' evaporate?
Sounds like something Hoover and Dyson could make a killing on!
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 12:04 pm
by Ann
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.
Ann
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 12:26 pm
by Coil_Smoke
Is it just me...or does that look like a capacitor in the top center of the column
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 12:37 pm
by neufer
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.
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 1:57 pm
by zbvhs
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?
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 2:08 pm
by rstevenson
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."
Rob
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 2:10 pm
by geckzilla
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.
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 5:06 pm
by Psnarf
Uh, WOW! There's a lot going on in there.
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 8:03 pm
by Chris Peterson
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.
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Sun Sep 29, 2013 10:05 pm
by neufer
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Mon Sep 30, 2013 7:37 am
by Phil T
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
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Mon Sep 30, 2013 2:10 pm
by BMAONE23
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
Re: APOD: The Fairy of Eagle Nebula (2013 Sep 29)
Posted: Tue Oct 01, 2013 5:33 pm
by Boomer12k
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...
Awesome.
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