Three passes by radar on the European Space Agency's Envisat built this newly-released image of Crete separating the Aegean
and Libyan Seas in the eastern Mediterranean. At the top is the southern portion of the Cyclades island group, including
the islands of Milos, Ios, Anafi and Santorini. Each pass, in December 2010 and January and March this year, is assigned a colour
(red, green and blue) and combined to produce this representation. New
colours reveal changes in the surface between Envisat's passes.
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