This intriguing astronaut photo shows around a dozen giant ... A star dune is a type of sand dune that has at least three ridges coming from a central peak, which gives it a star-like shape ...

If you are looking for a sand dune park that offers peak adventure, look no further than Little Sahara State Park in Oklahoma. Unlike other state and national parks, like Colorado's Great Sand ...

Down on Mars, Curiosity gives us an incredible panoramic 360° close up look at the Namib Dune, a giant sand ... ripples are spaced about three metres apart, a size not seen anywhere on Earth ...

The wind is continuously moving sand grains up the longer dune slope, towards the top. The small ripples on the slope ... MRO and released by NASA. Images like this are pure eye candy, but they ...

At ground level, the star dunes in Erg Chebbi can look like human-made pyramids when viewed from afar. (Image credit: Getty Images) The largest star dune in Erg Chebbi, Lala Lallia, is 330 feet ...