Researchers have found evidence of an existing body of liquid water on Mars. What they believe to be a lake sits under the planet's south polar ice cap, and is about 20km (12 miles) across.

researchers used data from the Marsis radar to report signs of a 20km-wide subsurface lake located 1.5km under Mars' south polar layered deposits, a thick polar cap formed by layers of ice and dust.

Doubt has been cast on the possibility of a lake of liquid water buried beneath Mars' southern ice cap by new computer simulations, which suggest that closely compacted layers of ice could produce ...

New data from the European Space Agency's Mars Express orbiter suggests a massive deposit called the Medusae Fossae Formation (MFF) holds enough water ice to cover the entire planet in an ocean ...

Despite the chilly temperatures, there could be liquid water underneath the surface ice ... lake, 20 kilometres across, hidden beneath the south pole. If there were once oceans on Mars, they ...

Indian scientists have discovered that an ancient lake on Mars, now a parched and salt-encrusted barren landscape ... that the planet experienced intermittent periods of warmth,” Singh said. “During ...

Martian "Snow": A Layer of Carbon Dioxide Ice Captured by the European Space Agency’s Mars Express and NASA’s Mars Reconnaissance Orbiter, these images reveal what appears to be snow.