Using observations spanning a period of four years, a team of researchers from Italy found evidence of a large lake of salty water, buried 1.5km beneath Mars’s southern polar cap. But does it contain life?
There’s plenty of excitement at the announcement overnight that a new planet is potentially waiting to be found at the extremes of our solar system. The possible ninth planet is thought to be quite substantial, with a mass around 10 times that of Earth and a radius that’s two
