A huge 12-mile lake of liquid water has been discovered on Mars for the first time as scientists hunt for alien life on the planet. It lies beneath the red planet's southern ice cap and "this is the place on Mars where you have something that most resembles a habitat, a place where life could subsist," according to Prof Roberto Orosei from the Italian National Institute for Astrophysics. Continue reading for another video and more information.
"This kind of environment is not exactly your ideal vacation, or a place where fish would swim. But there are terrestrial organisms that can survive and thrive, in fact, in similar environments. There are microorganisms on Earth that are capable of surviving even in ice," adds Orosei.