Many space missions of exo/astrobiological importance have been launched since the beginning of planetary exploration with space probes more than 40 years ago. The most exobiologically oriented one was certainly the Viking mission to Mars, which became the first extraterrestrial planetary target to be searched for evidence of (extinct and extant) life. However, there is another category of extraterrestrial planetary bodies of prime interest for Exobiology: bodies where a complex organic chemistry is taking place. Titan, Saturn’s largest satellite, with its thick nitrogen atmosphere, rich in organics in the gas and aerosol phases, and with many analogies to the early Earth, is probably, with the comets, one of the most exobiologically interesting bodies of this second kind.
KeywordsMethane Hydrate Space Science Review Liquid Body Huygens Probe Planetary Mission
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