“Ancient rivers show lack of plate tectonics on Mars and Titan”


Titan, at night
A 2005 NASA/JPL public domain image of Saturn’s moon Titan


This is more important than you might think:




Despite the earthquakes and other negatives associated with plate tectonics, the movement of Earth’s plates also contributes to the habitability of the planet.  (I’ll enlarge on that point, someday, in a much more substantial publication.  It’s scarcely original with me, but it will probably be new to many.)


Posted from Paris, France



Good luck with next class. Let me know when you would like me substitute for you on the next of your many sojourns.

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