Or maybe it can. Data from the Huygens probe indicates that it is raining methane on Titan, and it will probably continue to do so for the foreseeable future. Plus the satellite has huge lakes of liquid methane and ethane, too. It may not sound too hospitable (and indeed, it wouldn’t be for us), but all that liquid moving around ramps up the possibility of there being some form of primitive life to be found.
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There’s a related news item at Methane makers yield to science which says:
The genetic code of an important group of methane-producing microbes has been sequenced by German scientists.
The archaea are probably the major source of methane emanating from rice fields, contributing up to a quarter of global emissions of the gas.
The article goes on to say that an archaea group called Rice Cluster I (RC-I) is probably responsible and then ends:
Some researchers hold out hope that some of the methane traces observed on Mars, for example, may be coming from organisms like RC-I.
John Latter / Jorolat
(Evolution Research)