Titlebook: Water on Mars and Life; Tetsuya Tokano Book 2005 Springer-Verlag Berlin Heidelberg 2005 Habitat.Reservoir.astrobiology.cold region hydrolo

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9 Polar Lakes, Streams, and Springs as Analogs for the Hydrological Cycle on Mars,milarly life may have been present in ice-covered lakes and permafrost springs on Mars. Evidence for past life on Mars may therefore be preserved in the sediments and mineral precipitates associated with these features.

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11 Impact Craters, Water and Microbial Life,resent. We discuss some examples of microbial communities in terrestrial impact structures that are associated with some of these mechanisms of water enhancement and we discuss the importance of impact structures as places suitable for microbial life on other rocky planets, specifically Mars.

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Helmut Lammer,Franck Selsis,Thomas Penz,Ute V. Amerstorfer,Herbert I. M. Lichtenegger,Christoph Kolb

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Helmut Lammer,Franck Selsis,Thomas Penz,Ute V. Amerstorfer,Herbert I. M. Lichtenegger,Christoph Kolb

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1 The Origins of Martian Water: What We Can Learn from Meteorites,s Global Surveyor (MGS) continue to show channels apparently cut by water. The question is no longer whether or not water is or was present, but how much there is, where did it originate and what does this mean for the possible evolution of life forms on the planet.

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