Scientists discover a metal ball at the center of the Earth: what does it mean?

While it was previously thought that only four layers made up the Earth, experts have come to the conclusion that there is an inner layer as well.

Earth. Photo: Unsplash.

Two Australian scientists were surprised by the incredible discovery: At the center of the earth is a metal ball. According to experts, this ball is inside an inner core Iron and Nickel. Before this discovery came to light, they were considered The four layers of the earth were created: Crust, Mantle, Outer and Inner Core.

Both Seismologists The invention belongs to and is called the Australian National University Thanh-Son Phạm y Hrvoje Tkalčić. In their study, A “inner core, inner”It's a metal ball published in Nature Communications.

Earth.  Photo: Unsplash.Earth. Photo: Unsplash.

In this research, seismologists sense earthquakes by studying them and measuring their magnitude Seismic wavesThat has an echo Tierra Waves are measured by the time it takes them to travel around the world. According to experts, each layer has a different density.

DNA.  Photo: Unsplash

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Analysts' comments

Baum told the Washington Post: “Clearly, the inner inner core is different than the outer shell. We think that the way atoms are packed in these two regions is slightly different. “The big breakthrough of this study is that we found a new way to model the core of Earth's inner core.”

On the other hand, in conversation they explained more about their discovery. “Understand the evolutionary history of our planet's inner core and its relationship to the geomagnetic field. It is relevant to understanding the chronology of the evolution of life on Earth's surface. “The potential difference between the inner metal ball and the outer layer of the inner core is not in its chemical composition, as occurs in other layers of the Earth,” they pointed out.

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Earth.  Photo: UnsplashEarth. Photo: Unsplash

They added: “Both may contain small amounts of lighter chemical elements from the alloy of iron and nickel. Also, the transition from the inner ball to the outer shell of the inner core appears gradual rather than abrupt. Therefore, we cannot observe it through direct reflection of seismic waves. “This differs from previous studies documenting sharp boundaries between other layers on Earth, for example, from the crust to the mantle.”

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