Tantalizing secrets of the Solar System.
Hold onto your butts: Uranus' moons — or at least some of them — may be a lot more liquid than once believed.
Researchers taking another look at nearly forty-year-old data collected by NASA's Voyager 2 spacecraft have discovered that energized plasma particles are being ejected into nearby space from one or two of Uranus' moons: Ariel and/or Miranda. While the researchers haven't determined the mechanism that's driving these particles beyond their lunar boundaries, their findings so far, as detailed in a, suggest there's a good chance that subsurface oceans could be responsible.
What caught the scientists' eye was that the particles appeared to be clumped around Uranus' magnetic equator. That's odd, because the magnetic forces should cause the particles to disperse and spread across the planet — unless, the researchers concluded, there was a steady supply of magnetized particles from a nearby moon, ejected as a vapor plume from an ocean somewhere beneath its icy exterior.
France Dernières Nouvelles, France Actualités
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