1. Mar 2, 2013 #1
   

   chicharronne Well-Known Member

   4,200

   Jun 22, 2006

   http://earthobservatory.nasa.gov/IOTD/view.php?id=80337

    

   chicharronne, Mar 2, 2013

   chicharronne, Mar 2, 2013
3. Mar 2, 2013 #2
   

   rcarter Well-Known Member

   4,222

   Jul 26, 2009

   Pretty cool read.

    

   rcarter, Mar 2, 2013

   rcarter, Mar 2, 2013
4. 
   

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