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A new mystery discovered in the core of the Earth

 The riddles in the center of the Earth have long fascinated scientists. Researchers have now unveiled unexpected features of the Earth's core. It rotates at a variety of speeds from the surrounding mantle.

 

Another interesting result shows that the center of the Earth could be softer than previously thought, according to Live Science.

Some secrets of the inner core of the Earth have been revealed by the acoustic waves that pass through the heart of our planet. Beneath the outer layer of liquid metal in the center of the Earth is a solid ball of iron and nickel alloy, which has a diameter of about 1,220 kilometers.

Scientists have recently discovered that the core has a temperature of 6,000 degrees Celsius, being as hot as the surface of the Sun.

Geologists believe that the interactions between the inner and outer core could explain the fact that our planet has the characteristics of a dynamo.

"The inner core of the Earth is the part farthest from the surface, so there's a lot we don't know about it because we can't take samples from that area," said Arianna Gleason, a geologist at Stanford University in Stanford. California, United States.



One way to find out more about the inner core was by analyzing the sound waves generated by earthquakes as they travel across the planet.

"This is the first evidence that the inner core rotates at a variety of speeds from the mantle," said Hrvoje Tkalcic, a geophysicist at the University of Canberra, Australia. The inner core rotates eastward. At the speeds at which it moves, it could complete one revolution every 750 to 1,440 years.

These speeds appear to be unstable, but the exact cause of these speed fluctuations is unknown. Gravitational and magnetic forces probably play an important role.

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