![]() When under sufficiently high pressure, the irons rearrange into hexagonal prisms. ![]() The atoms are arranged in nanoscopic cubes, with an iron atom in the center and one at each corner. Under normal conditions on the Earth’s surface, iron is arranged a certain way naturally. The paper’s title is “ Femtosecond Visualization of hcp-Iron Strength and Plasticity under Shock Compression” and it’s published in the journal Physical Review Letters. The researchers, led by Sébastien Merkel of the Université de Lille, published a paper reporting their findings. But researchers at the DOE’s SLAC (Stanford Linear Accelerator Center) wanted to recreate the extremes at the Earth’s center as best they could to test iron’s behaviour. Most of what scientists do know about iron in these extreme conditions comes from laboratory experiments involving lesser temperatures and pressures. ![]() ![]() What happens to the iron when two planets collide? What happens to the iron at the Earth’s core? In both scenarios, the iron is subjected to extreme heat and pressure. ![]()
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