Friday, September 24, 2010

Northern Springtime On Titan

Spring is breaking out all over the northern hemisphere of Saturn's magnificent moon, Titan. Because Titan orbits Saturn, and Saturn orbits the Sun once about every 30 Earth years, springtime on Titan will last roughly 7 Earth years-- good news for any young lovers that might be there.

Northern spring seems to be characterized by cloudless skies at both poles, that according to both computer models of Titan's atmosphere and direct observation of that atmosphere, especially by NASA's Cassini spacecraft. Cassini's mission in the Saturnian system has been extended to 2017, so, if all goes well for the probe, Cassini will be able to monitor Titan through most of the new season.

Young lovers on Titan are not completely out of the question, either. Titan has a surface and atmosphere that are home to complex organic molecules. Energy drives an active and complex weather system. Liquid that could be the medium for early life-- methane, in this case, not water-- exists on the surface. Titan is incredibly cold, but we are learning life is incredibly tenacious and adaptable. If life got a start on Titan, and has had a relatively stable environment since, it may well have developed capabilities that allow it to thrive there.

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