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Sand grains striking an object create a similar shape as that seen in particle smashing experiments that recreate the early moments of the universe.
Credit: S. Nagel, H. Jaeger, U. of Chicago
click on link to view video
http://www.livescience.com/common/media/video/player.php?aid=16265
Credit: S. Nagel, H. Jaeger, U. of Chicago
click on link to view video
http://www.livescience.com/common/media/video/player.php?aid=16265
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