Image of the day

Rainbow volcano?
Has a satellite found a volcano featuring all the colours of the rainbow on Earth? In actual fact, radar data from the European satellite Envisat acquired over several years has made it possible to note that Kenya’s volcano Longonot (foreground) has risen by 9 cm. The colours are a means of representing the differences existing between the measurements and thus quantifying the changes that occurred between 2004 and 2006.
Credit: ESA

Envisat on ESA’s website

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