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Wednesday, March 26, 2008

Water Vapor in Enceladus Might Mean Life on Saturn

A sniff test of water vapor spewing from Saturn's moon Enceladus shows it is gushing with organic molecules, increasing the possibility of life existing somewhere in the Saturn system.

Scientists have been intrigued by the moon since the fountain of water was first spotted in 2005. Now they've identified a soup of prebiotic material there, similar to what's found in comets, from an analysis of data collected by the Cassini spacecraft.

Nobody really knows how life began, but astrobiologists guess it required chemicals like those tasted by Cassini, a little liquid water and some unknown spark.

Hunter Waite, a Cassini principal investigator at the Southwest Research Institute (SWRI) in San Antonio, said Enceladus' newly understood composition should stir up previous notions of Saturn and its moons.

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