Water on Mars Facts
Scientists have discovered that the upper atmosphere of Mars contains much more water than previously thought. Also made the assumption that once the "Red Planet" was more water than now.
According to data obtained by the European Space Agency, in the atmosphere of Mars is saturated steam. Until recently it was thought that such a pair can not exist in the cold atmosphere, since any pair turns to ice at low temperatures.
It seems that previous climate models significantly underestimated the properties of the planet and must be reconstructed with the new data: water vapor still present on Mars, and it is characterized by a dynamic, depending on the season.