Venus, Mars, and the ices on Mercury and the moon: astrobiological implications and proposed mission designs.

@article{SchulzeMakuch2005VenusMA,
  title={Venus, Mars, and the ices on Mercury and the moon: astrobiological implications and proposed mission designs.},
  author={Dirk Schulze‐Makuch and James M. Dohm and Alberto G. Fair{\'e}n and Victor R. Baker and Wolfgang Fink and Robert Strom},
  journal={Astrobiology},
  year={2005},
  volume={5 6},
  pages={
          778-95
        }
}
Venus and Mars likely had liquid water bodies on their surface early in the Solar System history. The surfaces of Venus and Mars are presently not a suitable habitat for life, but reservoirs of liquid water remain in the atmosphere of Venus and the subsurface of Mars, and with it also the possibility of microbial life. Microbial organisms may have adapted to live in these ecological niches by the evolutionary force of directional selection. Missions to our neighboring planets should therefore… 

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