system
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human
How does Saturn's moon Titan have oil? Was there life?

So they discovered oil on Titan. My question is how was the oil formed there? On earth it was formed because of plant and animal matter decaying? What process is at work for Titan?
gpt
Titan has hydrocarbons which are found in petroleum but they have a different origin in that they are abiogenesis - that is created without life. Instead Titan formed with a large complement of methane which us sensitive to UV light from the Sun. Over millions of years, methane molecules have one or more hydrogen atoms cleaved off by a UV photon to create a highly reactive methyl radical which on occasion will react with another methyl to form ethane, ethane can lose a hydrogen to become an ethyl radical which can then react to form heavier hydrocarbons. The heaviest molecules form a thick smog which eventually condenses on the surface.

The same process is responsible for the red or brown colours of the outer icy moons in the solar system as well as the very dark colour of comets.

It has been proposed that some oil on Earth is of abiogenic origin and comes from the Mantle, but the evidence for it is lacking.