Environment

Core Discovery

Scientists say they have found evidence of a new, deeper inner core of the planet, which they say could point to an unknown and dramatic event in Earth’s geologic history.

“Traditionally, we’ve been taught the Earth has four main layers: the crust, the mantle, the outer core and the inner core,” said Australian National University geophysicist and lead researcher Joanne Stephenson.

The newly discovered “innermost inner core” was revealed by using a search algorithm to examine decades of seismic data on how different levels of the Earth cause sound waves to slow down.

from WordPress https://ift.tt/3gzSStg