The Gegenschein Over Chile


	The Gegenschein Over Chile

papananook

5-8-2008 4:53 AM

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papananook says:

t seen at the site

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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/44e46ed8-3cbe-46aa-b4f7-73a5e9b1fbed/1D1C3A41-66E7-42C9-BA7E-BD94235344C6/" 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://antwrp.gsfc.nasa.gov/apod/ap080507.html" href="http://antwrp.gsfc.nasa.gov/apod/ap080507.html" style="font-size: 11px;">antwrp.gsfc.nasa.gov</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://antwrp.gsfc.nasa.gov/apod/ap080507.html"><P>
2008 May 7 
<A href="http://antwrp.gsfc.nasa.gov/apod/image/0805/gegenschein_eso_big.jpg">
<IMG alt="See Explanation.  Clicking on the picture will download
 the highest resolution version available." src="http://antwrp.gsfc.nasa.gov/apod/image/0805/gegenschein_eso.jpg" /></A>
</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://antwrp.gsfc.nasa.gov/apod/ap080507.html"><CENTER>
<B> The Gegenschein Over Chile </B> 
<B> Credit & Copyright: </B> 
<A href="http://antwrp.gsfc.nasa.gov/apod/mailto:ybialets at eso dot org">Yuri Beletsky</A>
(<A href="http://www.eso.org/">ESO</A>)
</CENTER></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://antwrp.gsfc.nasa.gov/apod/ap080507.html">
Here a deep exposure of an extremely dark sky over 
<A href="http://www.eso.org/paranal/">Paranal Observatory</A> in 
<A href="http://en.wikipedia.org/wiki/Chile">Chile</A> shows 
the gegenschein so clearly that even a surrounding glow is visible.   
In the foreground are several of the 
<A href="http://www.eso.org/public/">European Southern Observatory</A>'s
<A href="http://antwrp.gsfc.nasa.gov/apod/ap000707.html">Very Large Telescopes</A>, 
while notable background objects include the 
<A href="http://antwrp.gsfc.nasa.gov/apod/ap061126.html">Andromeda galaxy</A> toward the lower left and the 
<A href="http://antwrp.gsfc.nasa.gov/apod/ap060109.html">Pleiades</A> star cluster just above the horizon.  
<A href="http://en.wikipedia.org/wiki/Gegenschein">The gegenschein</A> 
is distinguished from <A href="http://antwrp.gsfc.nasa.gov/apod/ap040825.html">zodiacal light</A> near the Sun by the 
high angle of reflection.  
During the day, a phenomenon similar to 
<A href="http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1997MNRAS.288.1022J">the gegenschein</A> called <A href="http://antwrp.gsfc.nasa.gov/apod/ap020417.html">the glory</A> can 
be seen in reflecting air or clouds opposite the Sun from an airplane.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://antwrp.gsfc.nasa.gov/apod/ap080507.html">
The gegenschein is sunlight back-scattered off small interplanetary
<A href="http://antwrp.gsfc.nasa.gov/apod/ap010813.html">dust</A> particles.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/1D1C3A41-66E7-42C9-BA7E-BD94235344C6/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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