The Mars Global Surveyor dataset included measurements during a dust storm that originated in the southerly Hellas Planitia impact basin and swathed the whole planet one southern spring. Analysis of ...

Slope lines in Hale Crater (photo: NASA) 'Ghost Dunes' in Noctis Labyrinthus and Hellas basin Today, Mars is a planet predominantly shaped by wind, as water evaporated when its atmosphere became ...