Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12666/707
Title: Evaluating the Microbial Habitability of Rogue Planets and Proposing Speculative Scenarios on How They Might Act as Vectors for Panspermia
Authors: Schulze Makuch, D.
Fairén, A.
Keywords: Rogue planet;Microbial life;Habitability;Panspermia
Issue Date: 14-Aug-2021
Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/life11080833
Published version: https://www.mdpi.com/2075-1729/11/8/833
Citation: Life 11(8): 833(2021)
Abstract: There are two types of rogue planets, sub-brown dwarfs and “rocky” rogue planets. Sub-brown dwarfs are unlikely to be habitable or even host life, but rocky rogue planets may have a liquid ocean under a thick atmosphere or an ice layer. If they are overlain by an insulating ice layer, they are also referred to as Steppenwolf planets. However, given the poor detectability of rocky rogue planets, there is still no direct evidence of the presence of water or ice on them. Here we discuss the possibility that these types of rogue planets could harbor unicellular organisms, conceivably based on a variety of different energy sources, including chemical, osmotic, thermal, and luminous energy. Further, given the theoretically predicted high number of rogue planets in the galaxy, we speculate that rogue planets could serve as a source for galactic panspermia, transferring life to other planetary systems
URI: http://hdl.handle.net/20.500.12666/707
E-ISSN: 2075-1729
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