Desert Ponds Are Strange Sight from Space

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Solar evaporation ponds in the Pampa del Tamarugal. The image was captured by Expedition 19 crew members aboard the International Space Station. (Image credit: NASA)

Brightly colored solar evaporation ponds in the Atacama Desert of Chile can be seen from space in stark contrast to their barren surroundings.

Astronauts aboard the International Space Station took an image of one such set of ponds on May 5 while orbiting overhead.

Nitrates and many other minerals are mined in this region. A few extraction pits and ore dumps are visible in the upper left of the image.

Iodine is also mined here. Waste liquids from the iodine plants are dried in the tan and brightly colored evaporation ponds to crystallize nitrate salts for collection.

The recovered nitrates are mainly used for fertilizer for higher-value crops. They are also used in the manufacture of pharmaceuticals, explosives, glass, and ceramics, as well as in water treatment and metallurgical processes.

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Live Science Staff
Live Science Staff
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