Caption throwback (2007): As the sun comes up in the spring, the ice evaporates in a complex way. This observation shows dark dust being blown across the seasonal south polar cap. The dust comes from the surface beneath the ice: it either starts at spots bare of ice, or it’s possible that it’s lofted from below the ice in geyser-like plumes. (Read the full caption.
: 1 April 2007 altitude
: 245 kmObservation details page
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