Earth’s Magnetic Field Almost Collapsed 565 Million Years Ago
Image: NASA
Earth’s magnetic field, which protects life from intense solar radiation, almost collapsed 565 million years ago, according to a study published Monday in Nature Geoscience. Now, a half-billion years later, Earth’s magnetic field is ten times stronger than it was in was during this early era. The inner core is slowly growing by “freezing” molten iron and nickel to its mass, a process that pumps heat into the outer core and bolsters Earth’s magnetic field.
Source: motherboard.vice.com