NASA Rover Sees Variable Environmental History at Martian Crater

One of NASA’s two Mars rovers has recorded a compelling saga of environmental changes that occurred over billions of years at a Martian crater. The Mars rover, Opportunity, surveyed the rim and interior of Victoria Crater on the Red Planet from September 2006 through August 2008. The rover revealed the effects of wind and water. The data show water repeatedly came and left billions of years ago. Wind persisted much longer, heaping sand into dunes between ancient water episodes. Full Story : NASA.gov…..