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Title: On A Hypothetical Mechanism of Interstellar Life Transfer Trough Nomadic Objects
Authors: Sadlok, Grzegorz
Keywords: Panspermia; Ejected exoplanets; Jovian moons; Interstellar transit
Issue Date: 2020
Citation: Origins of Life and Evolution of Biospheres, 2020
Abstract: Lethal radiation, low vacuum pressure and low temperatures – this is how space welcomes organisms. Crossing of immense interstellar distances inflates the exposure time of biological material to harmful space conditions. This paper discusses the intriguing possibility of a life-bearing exoplanet being ejected from its planetary system and carrying life across interstellar distances (nomadic = free floating = rogue planet). The proposed interstellar panspermia mechanism reduces the exposure time to space conditions and provides multiple chances for interactions between microbes-bearing rock debris and exoplanets within system the nomadic object encountered on its way. The testing strategy is outlined and discussed in the paper, including testable predictions the proposed hypothesis makes.
DOI: 10.1007/s11084-020-09591-z
ISSN: 0169-6149
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