CNN —The disappearing “magic islands” on Saturn’s largest moon Titan have intrigued scientists since NASA’s Cassini mission spotted them during flybys a decade ago. Titan, larger than both our moon and the planet Mercury, is the only moon in our solar system with a thick atmosphere. The sea is 50% larger than Lake Superior and is made up of liquid methane, ethane and nitrogen. An artist's illustration shows a lake at the north pole of Saturn's moon Titan, including raised rims spied by Cassini. Liquid methane slowly seeps into the frozen clumps, eventually causing them to disappear from view.

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Persons: NASA’s, Cassini, Xinting Yu, ”, Yu, Stéphane Le Mouélic, Virginia Pasek, ” Yu, “ Organizations: CNN, NASA, Titan, JPL, Caltech, University of Texas, Research, Johns Hopkins Applied Physics Laboratory Locations: Ligeia Mare, Superior, San Antonio, Virginia