It's not Mars but Jupiter’s moon Europa that is more likely to harbour life thanks to an ocean buried under a thick sheet of ice, a new study suggests
Around 20 years ago, a group of Stanford scientists noticed signs of what could mean life beyond Earth: a double ridge formation on the surface of Jupiter’s icy moon Europa, with the same gravity-scaled geometry landform in Northwest Greenland ice sheet.
The scientists questioned if the double ridges on Europa formed in the same way it formed in Greenland, after fracture of ice around water that refreezes inside the ice sheet. If a similar mechanism accounts for Europa, the fourth-largest of Jupiter's 79 known moons, the water pockets are likely to help circulate chemicals necessary for life through the fractures in the ice shell.
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