The biological potential of Mars, the early Earth, and Europa

Details The biological potential of Mars, the early Earth, and Europa The biological potential of Mars, the early Earth, and Europa

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...10319359j&link_type=abstract

Journal of Geophysical Research, Volume 103, Issue E8, p. 19359-19364

Mathematics

Logic

43

Planetology: Solar System Objects: Mars

Scientific paper

The potential biomass that could have existed on Mars is constrained by the total amount of energy available to construct it. From an inventory of the available geochemical sources of energy, we estimate that from the time of the onset of the visible geologic record 4 b.y. ago to the present, as much as 20 gcm-2 of biota could have been created. This is the same amount that could have been constructed on the early Earth in only 100 million years. This indicates that there likely was sufficient energy available to support an origin of life on Mars but not sufficient energy to create a ubiquitous and lush biosphere. Similar calculations for Europa suggest that even less geochemical energy would have been available there.

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