The Enduring Charm of Martian Spiders

Araneiform terrain (colloquially: spider-like terrain) is located in the south polar region of Mars and evolves in appearance over the spring and summer. In the season shown here, the thin bright lines on the surface (the spider legs) are troughs and many of these features have dark fan-shaped markings emanating from them.

More: https://uahirise.org/hipod/ESP_056927_0940
NASA/JPL-Caltech/University of Arizona
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