Although this inner core is white hot, the pressure is so high the iron cannot melt. The iron isn't pure—scientists believe it contains sulfur and nickel, plus smaller amounts of other elements.

Uncover the mysteries of Mars' magnetic field, generated by a molten core, unlike Earth's solid core structure.

The movement of these tectonic plates leads to earthquakes and volcanoes forming. Inner core The inner core is 2900 km below the Earth’s surface, in the centre of the Earth, and is the hottest ...

Researchers found that Mars could have produced a one-sided magnetic field with a fully molten core, rather than the traditional, Earth-like solid inner core setup. Like Earth, Mars once had a ...