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Astronomy Picture of the Day
NASA ^ | 3/22/10 | ESA, Planck HFI Consortium, IRAS

Posted on 03/22/2010 5:51:10 AM PDT by sig226


The Nearby Milky Way in Cold Dust
Credit:
ESA, Planck HFI Consortium, IRAS

Explanation: What shapes the remarkable dust tapestry of the nearby Milky Way Galaxy? No one knows for sure. The intricate structures, shown above, were resolved in new detail recently in a wide region of the sky imaged in far infrared light by the European Space Agency's Planck satellite. The above image is a digital fusion of three infrared colors: two taken at high resolution by Planck, while the other is an older image taken by the now defunct IRAS satellite. At these colors, the sky is dominated by the faint glow of very cold gas within only 500 light years of Earth. In the above image, red corresponds to temperatures as cold as 10 degrees Kelvin above absolute zero, while white corresponds to gas as warm at 40 Kelvins. The pink band across the lower part of the image is warm gas confined to the plane of our Galaxy. The bright regions typically hold dense molecular clouds that are slowly collapsing to form stars, whereas the dimmer regions are most usually diffuse interstellar gas and dust known as cirrus. Why these regions have intricate filamentary shapes shared on both large and small scales remains a topic of research. Future study of the origin and evolution of dust may help in the understanding the recent history of our Galaxy as well as how planetary systems such as our Solar System came to be born.


TOPICS: Astronomy Picture of the Day
KEYWORDS: apod

1 posted on 03/22/2010 5:51:10 AM PDT by sig226
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To: null and void; fnord; Number57; KevinDavis; rdb3; MNJohnnie; RightWhale; proudofthesouth; ...

2 posted on 03/22/2010 5:53:09 AM PDT by sig226 (Mourn this day, the death of a great republic. March 21, 2010)
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To: sig226

To quote Eddie Murphy.

Now that’s a fire.


3 posted on 03/22/2010 6:20:08 AM PDT by cripplecreek (Remember the River Raisin! (look it up))
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To: sig226

AWESOME!


4 posted on 03/22/2010 9:49:52 AM PDT by left that other site (Your Mi'KMaq Paddy Whacky Bass Playing Biker Buddy)
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To: sig226

It looks like the Nexus.
I want to go there.


5 posted on 03/22/2010 10:03:05 AM PDT by mowowie
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To: sig226

How beautiful. Who could even try to paint a picture like that?


6 posted on 03/22/2010 1:29:15 PM PDT by xJones
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To: sig226

And thank you, also, because on a day of mourning like this, it’s good to find comfort somewhere.


7 posted on 03/22/2010 1:31:46 PM PDT by xJones
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