Parts of the structure are younger than expected while an east wind blows the whole thing across the desert, researchers find

They are impressive, mysterious structures that loom out of deserts on the Earth and are also found on Mars and on Saturn’s biggest moon, Titan.

Experts from universities including Aberystwyth in Wales have now pinpointed the age of a star dune in a remote area of Morocco and uncovered details about its formation and how it moves across the desert.