For the first time in human exploration of Mars, the presence of a stable, subterranean body of salty (briny) water has been strongly suggested by data returned by the European Space Agency’s Mars Express orbiter. Using measurements taken by the MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) instrument, a team of Italian researches announced this week the first (probable) discovery of a stable body of liquid water on Mars. But with this discovery comes a host of questions regarding future exploration of the Red Planet.
