Galaxies - A cluster so massive, it distorts light from a Quasar


	Galaxies - A cluster so massive, it distorts light from a Quasar

BigBadWolf

7-24-2007 3:18 PM

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tags:

science, space, cosmos

2 Comments |

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7-25-2007 3:48 AM

debbyski

Good clip, Big Bad.

8-1-2007 8:18 PM

onlinedesign

I concur!

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/0454c16b-5a48-4660-b754-cab1f27d350b/F12BF0E7-3E22-439D-B38B-786164DD5C14/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://apod.nasa.gov/apod/ap060524.html" href="http://apod.nasa.gov/apod/ap060524.html" style="font-size: 11px;">apod.nasa.gov</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://apod.nasa.gov/apod/ap060524.html"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/apod.nasa.gov/img/1EA38001-EDE4-4807-986E-0D941139C1E4" alt="See Explanation.  Clicking on the picture will download
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What's happening near the center of this cluster of galaxies?  
At first glance, it appears that several strangely 
<A href="http://apod.nasa.gov/apod/ap950710.html">elongated galaxies</A> and fully five bright 
quasars exist there.  
In reality, an entire cluster of galaxies is acting as a 
<A href="http://apod.nasa.gov/apod/ap040807.html">gigantic gravitational lens</A> that distorts and multiply-images bright objects that occur far in the distance.   
The five bright white points near the cluster center are actually images of a single distant 
<A href="http://en.wikipedia.org/wiki/Quasar">quasar</A>.   
This <A href="http://www.stsci.edu/hst/HST_overview/">Hubble Space Telescope</A> 
image is so detailed that even the 
<A href="http://apod.nasa.gov/apod/ap980409.html">host galaxy</A> surrounding the quasar is visible.  
<A href="http://hubblesite.org/newscenter/newsdesk/archive/releases/2006/23/image/a+zoom">Close inspection</A> of the 
<A href="http://hubblesite.org/newscenter/newsdesk/archive/releases/2006/23/">above image</A> will reveal that the arced galaxies at 2 and 4 o'clock are actually 
<A href="http://www.iam.ubc.ca/~newbury/lenses/research.html">gravitationally lensed</A> 
images of the same galaxy.  
A third image of that galaxy 
<A href="http://imgsrc.hubblesite.org/hu/db/2006/23/images/b/formats/web_print.jpg">can be found</A> at about 10 o'clock from the cluster center.  
Serendipitously, numerous 
<A href="http://apod.nasa.gov/apod/ap020901.html">strange and distant galaxies</A> dot the above image like 
<A href="http://apod.nasa.gov/apod/ap060501.html">colorful jewels</A>.  
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