Maven probe spotted ultraviolet auroral glow in northern hemisphere . What was suprising was how deep in the atmosphere aurora occurred . Dust was also found up to 190 miles ( 300 km ) above planet 's surface . No known process on the red planet 's can explain the appearance of dust clouds .
Maven probe spotted ultraviolet auroral glow in northern hemisphere . What was suprising was how deep in the atmosphere aurora occurred . Dust was also found up to 190 miles ( 300 km ) above planet 's surface . No known process on Mars can explain the appearance of dust clouds .