Caltech scientists discover fog on Titan

Saturn's largest moon, Titan, looks to be the only place in the solar system - aside from our home planet, Earth - with copious quantities of liquid (largely, liquid methane and ethane) sitting on its surface. According to planetary astronomer Mike Brown of the California Institute of Technology (Caltech), Earth and Titan share yet another feature, which is inextricably linked with that surface liquid: common fog...

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