Explanation for formation of abundant features on Europa bodes well for search for extraterrestrial life
Illustration of the moon Europa, with Jupiter in background .Europa is a prime candidate for life in our solar system, and its deep saltwater ocean has captivated scientists for decades. But it's enclosed by an icy shell that could be miles to tens of miles thick, making sampling it a daunting prospect. Now, increasing evidence reveals the ice shell may be less of a barrier and more of a dynamic system -- and site of potential habitability in its own right.
Upon further examination, they found that the"M"-shaped crest in Greenland known as a double ridge could be a miniature version of the most prominent feature on Europa.Double ridges on Europa appear as dramatic gashes across the moon's icy surface, with crests reaching nearly 1000 feet, separated by valleys about a half-mile wide.
The co-authors said their explanation for how the double ridges form is so complex, they couldn't have conceived it without the analog on Earth.
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