Scientists have discovered why the crystallised iron core of the Earth remains solid, despite being hotter than the surface of the Sun.

Researchers at the KTH Royal Institute of Technology in Sweden found that on the edge of the inner core, pieces of crystals’ structure continuously melt and diffuse only to be reinserted due to high pressure like “shuffling deck of cards.”

This energy distribution cycle keeps the crystal stable and the core solid.

Spinning within Earth’s molten core is a crystal ball — actually a mass formation of almost pure crystallised iron — nearly the size of the moon.................Read more

Source: The Hindu