Ganymede’s Bizarre Bulge Baffles Scientists

There ’s a strange bulge on the Solar System ’s largest moon , one that measures 375 miles all-inclusive and nearly two mile tall . Scientists are n’t entirely sure why it ’s there or what caused it , but it may have something to do with the Jovian lunar month ’s subsurface sea .

Asreportedby Nadia Drake inNational Geographic , the protuberance is about the size of Ecuador and half the pinnacle of Mount Kilimanjaro .

link up : There May Be More Water On Jupiter ’s Largest Moon Than On world

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https://gizmodo.com/there-may-be-more-water-on-jupiters-largest-moon-than-o-1691284432

This equatorial bulge , possibly the result of “ polar roving ” , could intend the lunar month ’s pole have lurch by 90 degrees , and that the moon sincerely has a subterranean sea . Drakewrites :

… Schenk thinks , the extrusion began growing at one of the rod . Then , once the bulge get big enough , its hoi polloi began to drag the shell into a different position . The shell slid atop the ocean , while the moon ’s interior stayed in the same orientation . finally , the part of the case that once cap the celestial pole end up at the equator .

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“ The only position you’re able to get a big mass like that — that ’s not related to geology that we know of — is at the cold pole , ” Schenk say . “ The poles are for good cold , so it guide to a meaning amount of thickening of the water ice shell . ”

It wo n’t chance like this on Earth , but this would be a bit like the Arctic ending up at the Equator , while everything beneath the crust stays in the same stead .

Interestingly , if this polar roamer hypothesis is true , then there should be a similar bulge on the opposite side . The researchers hope to confirm this in future .

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