Follow the plume: The habitability of enceladus

Christopher P. McKay, Ariel Anbar, Carolyn Porco, Peter Tsou

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

The astrobiological exploration of other worlds in our Solar System is moving from initial exploration to more focused astrobiology missions. In this context, we present the case that the plume of Enceladus currently represents the best astrobiology target in the Solar System. Analysis of the plume by the Cassini mission indicates that the steady plume derives from a subsurface liquid water reservoir that contains organic carbon, biologically available nitrogen, redox energy sources, and inorganic salts. Furthermore, samples from the plume jetting out into space are accessible to a low-cost flyby mission. No other world has such well-studied indications of habitable conditions. Thus, the science goals that would motivate an Enceladus mission are more advanced than for any other Solar System body. The goals of such a mission must go beyond further geophysical characterization, extending to the search for biomolecular evidence of life in the organic-rich plume. This will require improved in situ investigations and a sample return.

Original languageEnglish (US)
Pages (from-to)352-355
Number of pages4
JournalAstrobiology
Volume14
Issue number4
DOIs
StatePublished - Apr 1 2014

Keywords

  • Ice
  • Icy moon
  • Life detection

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Space and Planetary Science

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