Mars may be hiding water deep beneath its surface, NASA’s InSight lander has discovered – and the planet’s magnetic field has a life of its own, pulsing at the stroke of midnight in a manner utterly unlike anything found on Earth. There may be liquid water on Mars after all – dozens of miles inside the planet, according to magnetic measurements from the InSight lander, which has been exploring Mars since landing in November. The probe’s magnetometer seems to register an electrically conductive layer up to 62 miles beneath the surface, appearing similar to how water deep within the Earth appears using terrestrial magnetometers. Unfortunately for would-be Martian colonists eager to find out whether there really is water down there, InSight can only drill 16 feet beneath the surface, leaving a potential oasis woefully out of reach.
Source: Mysterious magnetic pulses and evidence of groundwater discovered on Mars