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This spectacular "blue marble" image is the most detailed true-color image of the entire Earth to date. A new NASA-developed technique estimates Earth's center of mass to within 1 millimeter (.04 inches) a year by using a combination of four space-based techniques. The more accurate frame of reference has applications ranging from improving estimates of global sea level rise to improving our understanding of earthquakes and volcanoes. (Credit: NASA/GSFC)




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11 posted on 06/27/2007 12:50:24 AM PDT by SunkenCiv (Time heals all wounds, particularly when they're not yours. Profile updated June 27, 2007.)

In the shadow of the Moon
New Scientist | 30 January 1999 | editors
Posted on 08/31/2004 11:42:25 AM EDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1203912/posts

12 posted on 06/27/2007 12:51:51 AM PDT by SunkenCiv (Time heals all wounds, particularly when they're not yours. Profile updated June 27, 2007.)