Mars' magnetic mystery may finally have a solution—scientists now think the Red Planet’s ancient magnetic field only existed ...

Scientists say the shape change is happening where the solid inner core meets the liquid outer core. "The molten outer core is widely known to be turbulent, but its turbulence had not been ...

Until now, most studies of early Mars had relied on magnetic field models that gave the red planet an Earth-like inner core that's solid and surrounded by molten iron. The researchers were ...