According to new research, published in the journal Geology, processes not involved in controlling sand movement on Earth play major roles on the Red Planet, especially large-scale features on the landscape and differences in landform surface temperature. Two sizes of ripples are evident in this December 13, 2015, view of a top of a Martian sand dune, from Curiosity. Sand dunes and the smaller type of ripples also exist on Earth. The larger ripples...
