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floodplain on Mars colorado042005_3sm Purkinje showing L1 transposition

Friday, January 21, 2005

Titan updates

The ESA Web page has updated data from the Huygen probe's descent to the surface of Titan last week. Really strange stuff, including a "water table" of methane seeping through "sand" made of ice crystals; rivers, and springs. The Hugyens probe was so hot that methane evaporated out of the soil in "whiffs." So the geology is a weird recapitulation of earth processes, using a completely different suite of chemical players.

So: could there be life? It is too cold for a life based on earth-type chemistry. But extremely low temperatures on Titan would mean that information could be stably stored in a whole other kind of molecule, and that the "living" part of life-- metbolism, you name it-- could harvest chemical bonds that are completely unstable in our comfort zone. .. Some interesting speculation here .

UPDATE 22 Jan: The Register does a good job summarizing pretty much the same conference. Does anyone know what the deal is with "primordial argon?"