New images show Mars as you've never seen it beforeBy Ashley Strickland, CNN
September 20, 2019
(CNN)One of the latest images of Mars looks more like cookies and cream than it does the so-called Red Planet.
A photo taken this week by the European Space Agency and Roscosmos ExoMars Trace Gas Orbiter's camera actually shows north polar dunes on Mars.
Winter at the poles causes carbon dioxide ice to cover the dunes in a thin layer. In spring, this layer immediately transforms from ice to vapor and the defrosting happens from the bottom of the dune and works its way up.
This works to trap gas in areas between the ice layer and the sand. When the ice defrosts, gas erupts from the cracks and inevitably, sand follows. That creates the dark "cookies" part of the cookies and cream-style image.
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