Writer Fuel: Mars Reconnaissance Orbiter Finds Polka-Dot Sand Dunes
NASA’s Mars Reconnaissance Orbiter (MRO) has captured stunning images of almost perfectly round sand dunes on the surface of the Red Planet. While sand dunes of all shapes and sizes are common on Mars, circular dunes like these are a rare sight. The dunes appear as slightly asymmetrical splodges in the picture, which was taken … Read more
