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Direct measurement of winds on Titan

Fast, Kelly E.; Hewagama, Tilak; Kostiuk, Theodor +4 more

We report the first direct measurement of wind velocity in the atmosphere of Titan, one of only two examples in our solar system of a slowly-rotating body with a dense atmosphere and a prime target of the Cassini mission. Zonal wind velocity was determined from Doppler shift of ethane lines emitted from Titan's stratosphere (∼0.1-7 mbar) measured …