Recognizing the geological signature of early life on Earth and Mars

Details Recognizing the geological signature of early life on Earth and Mars Recognizing the geological signature of early life on Earth and Mars

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.545..127j&link_type=abstract

In: Proceedings of the Third European Workshop on Exo-Astrobiology, 18 - 20 November 2003, Madrid, Spain. Ed.: R. A. Harris & L.

Biology

Mars: Exobiology, Space Instrumentation: Exobiology

Scientific paper

Our research is relevant to the search for life on other planets in two ways. Firstly, our ultimate goal is to understand the mechanisms and environmental context of biospheric evolution on the early Earth by identifying the fossils (be they morphological, ultrastructural, or chemical) of early prokaryotes and eukaryotes, determining their biological affinities, and examining their patterns of evolution through intervals of environmental change. This approach, in which sedimentary geology, optical and electronic microscopy, and microchemistry are used in combination, is applicable to Martian sediments. Indeed, terrestrial discoveries provide a comparative data base for evaluating extraterrestrial materials.

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