Stefan Mileschin

Europa's potential to support life may have increased thanks to geographic observations. Reutersnotes researchers have discovered similarities between double ridges on the Jovian moon's surface and smaller-scale equivalents in Greenland. As the Greenland ridges were formed by subsurface water that refroze, this suggests Europa's counterparts formed the same way. That, in turn, would indicate large volumes of the liquid water necessary to support life similar to that on Earth.

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