Saturn's moon Titan: Its methane hydrological cycle and potential for life.

Jonathan I Lunine
Dipartimento di Fisica, UniversitÃ|  degli Studi di Roma â~@~\Tor Vergataâ~@~], Rome

Cassini Huygens data have revealed an active hydrologic cycle on Titan, with
methane and ethane as the working fluids, extant in clouds, rain, streams,
rivers, lakes and seas. The presence of such an active liquid system leads
to the question of whether a form of life might exist in such hydrocarbon
lakes, and how it might be detected. If we discover life on Titan, through a
future mission to the surface, it will dramatically expand the range of
possible space around other stars where habitable worlds might exist.