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Data from the Cassini-Huygens satellite showing oxygen ions
in the atmosphere around Saturn's rings suggests once again that molecular
oxygen alone isn't a reliable indicator of whether a planet can support life.
That and other data are outlined in two papers in the Feb. 25 issue of the journal Science co-authored by University of Michigan engineering professors Tamas Gombosi, J. Hunter Waite and Kenneth Hansen; and T.E. Cravens from the University of Kansas.
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