The Wind on Mars . ... Credit Copyright: MOC Team , MGS , NASA Explanation: Wind erosion has been discovered on Mars. Pictures of regions surrounding the north polar cap show sand dunes covered in frost. ... Since this frost can only be as old as the Martian winter is long, this erosion must have taken place within the past Martian year. ... Because the Martian atmosphere is so thin, a person standing on Mars would not get blown over by these Martian winds. ... NASA Official: Jay Norris. ...