Scientists have discovered two nuclei of the Earth

Little is known about the geology of the Earth's very center. Our planet was thought to have only one core, a molten mass of molten rock and gas surrounded by a solid rocky mantle. The mantle is a ring between the Earth's crust and the core. The core is 2,900 kilometers below the Earth's surface. Its radius is about 3,485 kilometers. Scientists at the University of Chicago have discovered that there may be a second core deep beneath our feet. The research led geophysicist Dr. Sunyong Park to believe that another core exists. She analyzed data from an earthquake 560 km deep. Her calculations showed the possibility of a second core, consisting of a layer of liquid rock, at the bottom of the mantle.

After Dr. Park studied the deep earthquake, she talked about why she found the Earth's core so intriguing. She said: "Even though the mantle makes up most of the Earth, there's still a lot we don't know about it." She added: "We can learn much more by using deep earthquakes as a way to explore these questions." Ms. Pak explained the importance of better understanding the center of our planet. She said: "We want to know exactly how fast the mantle is flowing because it affects the evolution of the whole Earth. It affects how much heat the planet retains, how long and how Earth's materials circulate over time. Our current understanding is that. is very limited and involves a lot of assumptions."