Spiders on Mars


Citizen scientists on the Planet Four project have tagged over 300 images (http://talk.planetfour.org/#/search?tags[spider]=true) showing features on the Martian surface known as “spiders”. They are found in the southern polar region and some scientists suggest they are caused by outflows of carbon dioxide (http://themis.asu.edu/news/gas-jets-spawn-dark-spiders-and-spots-mars-icecap).

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