New study reveals Earth’s hidden inner core and suggests a mystery cooling event – SYFY WIRE

We all recall the plaster cutaway models of the Earth in grammar school science class, with slices of our planet broken down into the simple components of crust, mantle, outer core, and inner core. 
In a revelation that could cause those older visual aids to become obsolete, scientists with the Australian National University have detected a possible fifth layer, a secret inner sphere, that has remained obscured until now. 
Their findings, suggesting that this inner inner core might indicate a second,…

Click here to view the original article.