becomes a red giant, its surface temperature could rise enough for Titan to support liquid water on its surface, making it habitable. 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 higher viscosity of ammonia-water solutions coupled with low temperatures would cause chemical reactions to proceed more slowly on Titan. See also Colonization of Titan Lakes of Titan Atmosphere of Titan Life on Titan List of natural satellites Saturn's moons in fiction The sky of Titan Titan in fiction Titan Winged Aerobot Vid Flumina a river of methane and ethane on Titan References Bibliography Further reading Jonathan O'Callaghan: A map of Saturn's largest moon. Nature, Vol 575, 426–427, 2019. External links Cassini–Huygens Mission To Saturn and Titan. Multimedia Feature Titan Virtual Tour Video of Huygens’ descent from the ESA Cassini Imaging Central Laboratory for Operations (CICLOPS) site Titan image search The Planetary Society (2005). TPS: Saturn's moon Titan. Retrieved March 28, 2005. The Alien Noise. This recording is a laboratory reconstruction of the sounds heard by Huygens'' microphones. AstronomyCast: Titan Fraser Cain and Pamela Gay, 2010. Titan nomenclature and Titan map with feature names from the USGS planetary nomenclature page Google Titan 3D, interactive map of the moon Image album by Kevin M. Gill 16550325 Discoveries by Christiaan Huygens Moons with a prograde orbit