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Subsurface exolife

Published online by Cambridge University Press:  04 April 2018

Manasvi Lingam
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA
Abraham Loeb
Affiliation:
Institute for Theory and Computation, Harvard University, Cambridge MA 02138, USA
Corresponding

Abstract

We study the prospects for life on planets with subsurface oceans, and find that a wide range of planets can exist in diverse habitats with ice envelopes of moderate thickness. We quantify the energy sources available to these worlds, the rate of production of prebiotic compounds, and assess their potential for hosting biospheres. Life on these planets is likely to face challenges, which could be overcome through a combination of different mechanisms. We estimate the number of such worlds, and find that they may outnumber rocky planets in the habitable zone of stars by a few orders of magnitude.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2018 

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