Roberto Orosei and colleagues authored a paper on the discover of a massive body of liquid water underneath ice on Mars that is 20 kilometers across (12 miles). Credit: Stefano Parisini / Media INAF ...

Small lakes on ancient Mars may have remained liquid for decades, even with average air temperatures well below freezing. Using a climate model adapted for Martian conditions, a team of researchers ...

A new study suggests the search for usable water on Mars may soon rely on an unexpected tool: drones equipped with radar, flying just above the surface to peer underground in ways orbiters cannot.