Extraterrestrial Argument
The presence of methane on Saturn's moon Titan and in the atmospheres of Jupiter, Saturn, Uranus and Neptune is cited as evidence of the formation of hydrocarbons without biology, for example by Thomas Gold. (Terrestrial natural gas is composed primarily of methane). Some comets contain "massive amounts of an organic material almost identical to high grade oil shale (kerogen)," the equivalent of cubic kilometers of such mixed with other material; for instance, corresponding hydrocarbons were detected during a probe fly-by through the tail of Comet Halley in 1986.
Read more about this topic: Abiogenic Petroleum Origin
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“Mistakes are made on two counts: an argument is either based on error or incorrectly developed.”
—Thomas Aquinas (c. 1225–1274)