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Astronomy Picture of the Day
NASA ^ | 2/13/08 | NASA

Posted on 02/13/2008 2:11:52 PM PST by sig226


Elliptical Galaxy NGC 1132
Credit:
NASA, ESA, M. West (ESO, Chile), and CXC / Penn. State / G. Garmire, et al.

Explanation: NGC 1132 is one smooth galaxy -- but how did it form? As an elliptical galaxy, NGC 1132 has little dust and gas, and few stars have formed in it recently. Although many elliptical galaxies are in clusters of galaxies, NGC 1132 appears as a large, isolated galaxy toward the constellation of the River (Eridanus). To probe the history of this intriguing trillion-star ball, astronomers imaged NGC 1132 in both visible light with the Hubble Space Telescope and X-ray light with the Chandra X-ray Observatory. In this composite false-color image, visible light is white, while the X-ray light is blue and indicates the unusual presence of very hot gas. The X-ray light also likely traces out the location of dark matter. One progenitor hypothesis is that NGC 1132 is the result of a series of galaxy mergers in what once was a small group of galaxies. NGC 1132 is over 300 million light years away, so the light we see from it today left before dinosaurs roamed the Earth. Many fascinating background galaxies can be seen far in the distance.


TOPICS: Astronomy Picture of the Day
KEYWORDS: apod

1 posted on 02/13/2008 2:11:58 PM PST by sig226
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To: sig226

Milky Way has 100 billion stars, compared to this trillion star galaxy it is insignificant.


2 posted on 02/13/2008 2:14:58 PM PST by RightWhale (Clam down! avoid ataque de nervosa)
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To: sig226

Whoa! I think I have played this game!


3 posted on 02/13/2008 2:17:21 PM PST by Red_Devil 232 (VietVet - USMC All Ready On The Right? All Ready On The Left? All Ready On The Firing Line!)
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To: Apple Blossom

ping


4 posted on 02/13/2008 2:19:44 PM PST by bmwcyle (the Beltway crowd is like a bunch of women who have started menstruating together)
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To: sig226

There is no God! This picture is foisted on us by The Vast Right Wing Conspiracy proponents and that evil Rush Limbaugh! /sarc


5 posted on 02/13/2008 2:20:10 PM PST by Don Corleone (Leave the gun..take the cannoli)
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To: sig226

Purple haze.


6 posted on 02/13/2008 2:24:11 PM PST by cripplecreek (Just call me M.O.M. (Maverick opposed to McCain.))
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To: sig226

Awesome! Thanks for the new “wall paper.”


7 posted on 02/13/2008 2:36:39 PM PST by clinkclink
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To: sig226

Looks like little ufos.


8 posted on 02/13/2008 9:42:01 PM PST by Peace Is Coming
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