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=== Future conditions ===
Conditions on Titan could become far more [[Planetary habitability|habitable]] in the far future. Five billion years from now, as the Sun becomes a [[red giant]], its surface temperature could rise enough for Titan to support liquid water on its surface, making it habitable.<ref>{{cite web |title=Climate Change in the Solar System |author=The National Air and Space Museum |date=2012 |url=https://blog.nasm.si.edu/2012/03/07/climate-change-in-the-solar-system/ |access-date=January 14, 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120311101403/https://blog.nasm.si.edu/2012/03/07/climate-change-in-the-solar-system/ |archive-date=March 11, 2012 }}</ref> As the Sun's ultraviolet output decreases, the haze in Titan's upper atmosphere will be depleted, lessening the anti-greenhouse effect on the surface and enabling the greenhouse created by atmospheric methane to play a far greater role. These conditions together could create a habitable environment, and could persist for several hundred million years. This is proposed to have been sufficient time for simple life to spawn on Earth, though the
== See also ==
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