Laboratory Investigation of CO2-Driven Enhancement of Radiolytic H2O2 on Europa
New research explores the impact of CO2 on hydrogen peroxide (H2O2) formation on icy moons like Europa under irradiation.
Experimental Setup and Findings
Scientists used an ultra-high vacuum chamber (Figure A) to simulate Europan ice conditions. They co-deposited H2O and CO2 ice, monitoring changes using a Quartz Crystal Microbalance (QCM) - Figure B.
The results indicate that the presence of CO2 significantly enhances the production of radiolytic H2O2. This finding has significant implications for understanding the potential for habitability on Europa and other icy bodies in the solar system.
Implications for Astrobiology
The increased H2O2 production could impact the redox chemistry of Europa's ocean and the availability of chemical energy for potential life. Future missions targeting Europa should consider the role of CO2 ice in driving these processes.
Learn more about Europa and astrobiology at NASA's Europa Clipper mission website.
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