Water present in liquid form on Mars, confirms NASA

Curious lines running down slopes on the Martian surface may be streaks of super-salty brine, said the latest findings on Monday in the scientific quest for extra-terrestrial liquid water, a prerequisite for life. The lines, up to a few hundred metres in length and typically under five metres (16 feet) wide, appear on slopes during warm seasons, lengthen, then fade as they cool.