Iron catastrophe
From Wikipedia, the free encyclopedia
The iron catastrophe was a crucial event early in the History of Earth with respect to the future of life on our planet. When the mass and temperature of the newly forming planet reached a critical level, the denser iron, held in the outer layers, sank towards the centre of the planet to form the core we see today; this event is also named planetary differentiation. This large spinning mass of super-hot metal is responsible for the Magnetosphere, which protects the earth from the most harmful components of Solar Radiation coming from our sun, and allowed life to evolve. The magnetosphere protects both life and our atmosphere to the present day and distinguishes our planet from one of its closest celestial neighbours, Mars, which did not experience its own iron catastrophe.
