On Titan the molecules that have been raining down like manna from heaven for the last 4 billion years might still be there largely unaltered deep-frozen awaiting the chemists from Earth

Carl Sagan
On Titan the molecules that have been raining down like...
On Titan the molecules that have been raining down like...
On Titan the molecules that have been raining down like...
On Titan the molecules that have been raining down like...
About This Quote

Titan, the biggest of Saturn's moons, is the only satellite in our solar system known to contain a substantial atmosphere. It is also the only moon with clouds and precipitation, although the substance raining down on Titan is not water but methane and hydrocarbon. A huge quantity of methane falls to the surface of Titan around once every 30 days, while similar amounts of hydrocarbons are released into Titan's atmosphere each year.

Source: Pale Blue Dot: A Vision Of The Human Future In Space

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