Cassini Explores a Methane Sea on Titan: Since arriving in the Saturn system in 2004, the Cassini spacecraft has revealed that more than 620,000 square miles of Titan's surface, almost two percent of the total, are covered in liquid.

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Submitted April 27, 2016 at 09:24AM by God_Wills_It_ http://ift.tt/1SK12eo