RT @NASAJPL: Dollars to doughnuts, @MarsRovers Oppy found the origin of that mysterious rock: go.nasa.gov/1gFNQTK http://t.co/h6QUmogVm1
RT @NASAJPL: Dollars to doughnuts, @MarsRovers Oppy found the origin of that mysterious rock: go.nasa.gov/1gFNQTK http://t.co/h6QUmogVm1