Scientists say they’ve found a “whole new hidden world” at the Earth’s core.The centre of the Earth has long been believed to be a solid ball of iron, surrounded by a super-hot molten outer core.But new research from US and Japanese based seismologists reveals that the story is much more complex, with multiple layers of hard metal, liquid metal and a certain amount of material that’s halfway between the two.No humans, or even machines, could venture to such depths.
But Rhett Butler, from the University of Hawaii and his colleague Seiji Tsuboib who works at Japan’s Centre for Earth Information Science and Technology, studied how shear waves created by earthquakes move through the globe."Illuminated by earthquakes in the crust and upper.
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