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Site selection for Mars exobiology.

J Farmer1, D Des Marais, R Greeley

  • 1NASA Ames Research Center, Moffett Field, CA 94035-1000, USA.

Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|March 1, 1995
PubMed
Summary

Identifying potential life on Mars requires careful site selection. This study prioritizes Martian locations with evidence of past water and favorable geology for exobiological research and future exploration.

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Area of Science:

  • Astrobiology
  • Planetary Science
  • Geology

Background:

  • Planning future Mars exploration missions necessitates identifying high-priority sites for exobiological research.
  • Orbital imaging targets are crucial for refining site selection for surface exploration.

Purpose of the Study:

  • To develop an objective methodology for selecting and scoring potential exobiological research sites on Mars.
  • To identify key geological features indicative of environments favorable for past life.

Main Methods:

  • Systematic review of Viking mission data for 83 sites in the Mars Landing Site Catalog.
  • Scoring sites based on evidence of prolonged liquid water activity and sedimentary deposits.
  • Prioritizing fluvio-lacustrine, spring, and periglacial environments.
Keywords:
NASA Center ARCNASA Discipline ExobiologyNASA Discipline Number 52-30NASA Discipline Number 52-80NASA Program ExobiologyNon-NASA Center

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Main Results:

  • 13 sites were selected for their exobiological interest from the Mars Landing Site Catalog.
  • Descriptions of selected sites were enhanced to address exobiological concerns.
  • Five additional sites were identified for the second edition of the Mars Landing Site Catalog.

Conclusions:

  • The developed objective approach refines site selection for exobiological research.
  • Prioritizing sites with evidence of water and favorable geology is key for the search for past life on Mars.
  • Continued refinement of site priorities using data from future missions will inform surface exploration strategies.