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Stories, updates, insights, and original analysis from The Planetary Society. 

Seasonal fans pointing in multiple directions near Mars' south pole

Introducing PlanetFour

The Mars I study is really active; the surface constantly changes. We have collected a lot of image data about changing seasonal features near the south pole. There is so much that we can't analyze all of it on our own. We need your help, through a new Zooniverse project named PlanetFour.