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Photos: Saturn geyser flyby, moon rings, and Mars

March 11, 2008 8:06 AM PDT

If only Titan were closer to Earth...

A recent study says Saturn's moon-with-an-atmosphere has hundreds of times more liquid hydrocarbons than all the known oil and natural gas reserves on Earth. Liquid methane and ethane fill giant lakes and seas--several dozen of which contain more hydrocarbon liquid than Earth's oil and gas reserves. And the Cassini spacecraft has mapped only about 20 percent of Titan's surface so far.

Photo by Steven Hobbs

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