Scientists may have discovered the ‘missing element’ deep inside Earth’s coreI…
Scientists may have discovered the ‘missing element’ deep inside Earth’s core
It’s generally well known that the innermost part of Earth is made mostly of iron (about 85%). Nickel accounts for about 10%. That last 5% however, has remained a bit of a mystery.
A Japanese research team has been searching for that missing element for decades, and now believes that the final 5% is most likely made from silicon, reports the BBC. They presented their results at the Fall Meeting of the American Geophysical Union in San Francisco.
The Earth’s core, which lies about 3,000 km below the surface, is thought to have a radius of about 1,200 km. Since it’s so deep, it’s impossible to directly test it, and find out precisely what the core is made of. (For comparison, the world’s deepest mines only reach a depth of about 4 km.)
Silicon has been a contender as the missing element in the core for a while. Researchers knew that it had to be a lighter element, and silicon has been suggested many times, because of its properties, such as how well it bonds to metals.
Read More: http://bit.ly/2iE5te5