SwRI: Radioactive Decay Could Support Extraterrestrial Life

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SwRI: Radioactive Decay Could Support Extraterrestrial Life

Post by bystander » Tue May 23, 2017 4:05 pm

Joint UTSA-SwRI Study Shows How Radioactive Decay Could Support Extraterrestrial Life
Southwest Research Institute | University of Texas, San Antonio | 2017 May 22
[img3="A University of Texas at San Antonio (UTSA) and Southwest Research Institute (SwRI) team modeled a natural water-cracking process called radiolysis. They applied the model to the icy bodies around our solar system to show how radiation emitted from rocky cores could break up water molecules and support hydrogen-eating microbes. (Credit: SwRI/UTSA)"]http://www.swri.org/sites/default/files ... olysis.jpg[/img3][hr][/hr]
In the icy bodies around our solar system, radiation emitted from rocky cores could break up water molecules and support hydrogen-eating microbes. To address this cosmic possibility, a University of Texas at San Antonio (UTSA) and Southwest Research Institute (SwRI) team modeled a natural water-cracking process called radiolysis. They then applied the model to several worlds with known or suspected interior oceans, including Saturn’s moon Enceladus, Jupiter’s moon Europa, Pluto and its moon Charon, as well as the dwarf planet Ceres.

“The physical and chemical processes that follow radiolysis release molecular hydrogen (H2), which is a molecule of astrobiological interest,” said Alexis Bouquet ... Radioactive isotopes of elements such as uranium, potassium, and thorium are found in a class of rocky meteorites known as chondrites. The cores of the worlds studied by Bouquet and his co-authors are thought to have chondrite-like compositions. Ocean water permeating the porous rock of the core could be exposed to ionizing radiation and undergo radiolysis, producing molecular hydrogen and reactive oxygen compounds. ...

Alternative Energy: Production of H2 by Radiolysis of Water in the Rocky Cores of Icy Bodies - Alexis Bouquet et al
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