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Microbial habitability of Europa sustained by radioactive sources.


ABSTRACT: There is an increasing interest in the icy moons of the Solar System due to their potential habitability and as targets for future exploratory missions, which include astrobiological goals. Several studies have reported new results describing the details of these moons' geological settings; however, there is still a lack of information regarding the deep subsurface environment of the moons. The purpose of this article is to evaluate the microbial habitability of Europa constrained by terrestrial analogue environments and sustained by radioactive energy provided by natural unstable isotopes. The geological scenarios are based on known deep environments on Earth, and the bacterial ecosystem is based on a sulfate-reducing bacterial ecosystem found 2.8?km below the surface in a basin in South Africa. The results show the possibility of maintaining the modeled ecosystem based on the proposed scenarios and provides directions for future models and exploration missions for a more complete evaluation of the habitability of Europa and of icy moons in general.

SUBMITTER: Altair T 

PROVIDER: S-EPMC5762670 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Microbial habitability of Europa sustained by radioactive sources.

Altair Thiago T   de Avellar Marcio G B MGB   Rodrigues Fabio F   Galante Douglas D  

Scientific reports 20180110 1


There is an increasing interest in the icy moons of the Solar System due to their potential habitability and as targets for future exploratory missions, which include astrobiological goals. Several studies have reported new results describing the details of these moons' geological settings; however, there is still a lack of information regarding the deep subsurface environment of the moons. The purpose of this article is to evaluate the microbial habitability of Europa constrained by terrestrial  ...[more]

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