Home Global Earth and Mars both have big sand dunes and small sand rippl…

Earth and Mars both have big sand dunes and small sand rippl…

Earth and Mars both have big sand dunes and small sand ripples, but on Mars, there’s something in between that we don’t have on Earth. Some of the wind-sculpted sand ripples on Mars are a type not seen on Earth, and their relationship to the thin Martian atmosphere today provides new clues about the atmosphere’s history. Details: http://go.nasa.gov/29yg0Gs