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The Earth’s Inner Core is over 1.5-billion-year old

Oct 12, 2015 By Joe Hennessey Leave a Comment

earth's interior

Seismological tests and other documents revealed that the Earth’s core is made up of iron and nickel which can reach almost 5700 K, the sun’s temperature. As for its dimension, the core has approximately 750 miles in width, which means 70% of the moon’s size.

A new study reveals that the earth’s inner core is over 1.5-billion-year old. This finding can change our knowledge about the Earth’s interior and can also change its history.

The results of this new research revealed that the Earth’s interior started to change into solid elements more than 1.3 billion years ago.

The American experts discovered that the Earth’s interior started to solidify from the melted metal found at its exterior.

Seismological tests and other documents revealed that the Earth’s core is made up of iron and nickel which can reach almost 5700 K, the sun’s temperature. As for its dimension, the core has approximately 750 miles in width, which means 70% of the moon’s size.

The American scientists believe that the solidification of Earth’s inner core plays a major role in the protection of our environment against damaging solar rays, as the solidified core created a strong magnetic field which offers this protection.

The persistent activity of the liquid metals located in the external core enhances the magnetic forces on our Planet. This external core is located at approximately 1,800 miles under the Earth.

When the metal from the Earth’s inner core decreases in temperature, it applies pressure against heat and gas, which then move into the fluid located at the external core.

Researchers analyzed ancient rocks and discovered that the Earth’s magnetic field started to increase in strength approximately 1.5 billion years ago.

According to a study which was published in Science journal in July, there was a strong magnetic field on the Red Planet which protected it against solar rays, but the field disappeared after 500 million years. This protection against solar rays may be the reason way our Planet is filled with life, while Mars is lacking life.

  “The core is losing heat more slowly than at any point in the last 4.5 billion years and this flow of energy should keep the Earth’s magnetic field going for another billion years or more,” a researcher claimed.

Image Source: Wikimedia

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Filed Under: Tech & Science Tagged With: 1.5 billion years, ancient core, ancient rocks, Earth's Inner Core, Earth's inner core is older, Inner Core of Earth, The Earth’s Inner Core is over 1.5-billion-year old

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