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Astronomy Picture of the Day -- A Dusty Iris Nebula [ constellation Cepheus ]
NASA ^ | August 04, 2011 | (see photo credit)

Posted on 08/03/2011 9:46:54 PM PDT by SunkenCiv

Explanation: These clouds of interstellar dust and gas have blossomed 1,300 light-years away in the fertile star fields of the constellation Cepheus. Sometimes called the Iris Nebula and dutifully cataloged as NGC 7023, this is not the only nebula in the sky to evoke the imagery of flowers. Surrounding it, obscuring clouds of dust and cold molecular gas are also present and can suggest other convoluted and fantastic shapes. Within the Iris, the dusty nebular material surrounds a hot, young star. The dominant color of the brighter reflection nebula is blue, characteristic of dust grains reflecting starlight. Central filaments of the cosmic dust glow with a faint reddish photoluminesence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. Infrared observations indicate that this nebula may contain complex carbon molecules known as PAHs. At the estimated distance of the Iris Nebula this remarkable wide field view is over 30 light-years across.

August 04, 2011

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; cepheus; science
[ Credit & Copyright: Máximo Ruiz]

1 posted on 08/03/2011 9:47:01 PM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...

2 posted on 08/03/2011 9:47:49 PM PDT by SunkenCiv (Yes, as a matter of fact, it is that time again -- https://secure.freerepublic.com/donate/)
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To: SunkenCiv

Wow, that is beautiful. I sense a new desktop photo coming on...


3 posted on 08/04/2011 2:16:18 AM PDT by glock rocks (Primary is a VERB)
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To: SunkenCiv

Another Winner!


4 posted on 08/04/2011 5:40:12 AM PDT by left that other site (Psalm 122:6)
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To: SunkenCiv

My God that’s amazing. Looking into forever.


5 posted on 08/04/2011 6:00:27 AM PDT by SQUID
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To: SunkenCiv

“A hot, young star” — every agent’s dream.


6 posted on 08/04/2011 7:20:22 AM PDT by TheOldLady (FReepmail me to get ON or OFF the ZOT LIGHTNING ping list.)
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To: TheOldLady

But would Laz hit it ?


7 posted on 08/04/2011 8:59:01 AM PDT by fieldmarshaldj (~"This is what happens when you find a stranger in the Amber Lamps !"~~)
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To: fieldmarshaldj; Lazamataz
But would Laz hit it ?

You will have to ask Lazamataz.

8 posted on 08/04/2011 9:04:18 AM PDT by TheOldLady (FReepmail me to get ON or OFF the ZOT LIGHTNING ping list.)
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To: TheOldLady; fieldmarshaldj

9 posted on 08/04/2011 9:33:05 AM PDT by Lazamataz (America. Great idea. Couldn't last.)
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To: Lazamataz

*snort* [giggles]


10 posted on 08/04/2011 9:50:44 AM PDT by TheOldLady (FReepmail me to get ON or OFF the ZOT LIGHTNING ping list.)
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To: texntenn

ping!


11 posted on 08/04/2011 10:17:18 AM PDT by Grammy
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To: SunkenCiv

Stunning. Thanks!


12 posted on 08/04/2011 3:15:37 PM PDT by colorado tanker
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To: TheOldLady

That planet collision graphic might make a good Zot ping message, just an idea. :’)


13 posted on 08/04/2011 5:37:32 PM PDT by SunkenCiv (Yes, as a matter of fact, it is that time again -- https://secure.freerepublic.com/donate/)
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To: glock rocks; left that other site; SQUID; colorado tanker

My pleasure, and thanks for the kind remarks.


14 posted on 08/04/2011 5:39:20 PM PDT by SunkenCiv (Yes, as a matter of fact, it is that time again -- https://secure.freerepublic.com/donate/)
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