Scientists studying data collected by the Zhurong rover on Mars have published a study which proves the presence of relatively recent water activity in the Utopia Planitia region. After landing in the region, Zhurong studied the four closest dunes, analyzing the composition of their surfaces. All four dunes, ranging from 15 to 30 meters in length and a height of up to 1 meter, were found to be covered with a small crust with cracks. They were formed as a result of the evaporation of water between 400,000 to 1.4 million years ago.