MarsNews.com

Not Vegetation! Defrosting Sand Dunes in Late Southern Winter NASA

As winter gives way to spring in the martian southern hemisphere, the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) is observing the retreat of the south polar frost cap as sunlight falls upon it for the first time in several months. One of the most aesthetically-pleasing aspects of the spring defrosting process is the pattern that is created on the martian sand dune fields.