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2500-15-large satellites

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Evolution of the Atmosphere<br />

• Methane (CH 4 ) Is Broken Down by Electrons and Ultraviolet<br />

Photons<br />

• Some Hydrogen Escapes to Space Enriching Deuterium on Titan<br />

• Evidence Shows There Is a High Abundance of CH 3 D Methane<br />

• “Left-Over” Carbon Must Be Removed from the System to Remain<br />

in Balance<br />

• Ethane (C 2 H 6 ) Is the Most Abundant End Product<br />

• Titan Is Cold Enough That This Gas Would Condense Forming<br />

Ethane Lakes on the Surface of Titan<br />

• Titan is 94 o K (-179 o C)<br />

• It Is So Cold That H 2 0 Vapor Would Be Completely Lacking<br />

• Therefore: Lacking Any Appreciable Amount of Oxygen – Methane<br />

Remains Un-Oxidized, Adding to the Condensed Hydrocarbon Lake<br />

on the Surface of Titan

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