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14/07/2015 0 comments

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NASA's GROVER passes its first polar test

14/07/2013
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Interesting facts:

One of the most mysterious phenomena in the Arctic are spherulites. They are perfectly round stones from a few centimeters to several metres in diameter and they are scattered in large quantities all over Champ Island (Franz Josef Land archipelago). There are many versions of how they were formed: from natural to extraterrestrial origin.

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