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  2. Internal structure of Earth - Wikipedia

    en.wikipedia.org/wiki/Internal_structure_of_Earth

    The transition between the inner core and outer core is located approximately 5,150 km (3,200 mi) beneath Earth's surface. Earth's inner core is the innermost geologic layer of the planet Earth . It is primarily a solid ball with a radius of about 1,220 km (760 mi), which is about 19% of Earth's radius [0.7% of volume] or 70% of the Moon 's radius.

  3. Earth's inner core - Wikipedia

    en.wikipedia.org/wiki/Earth's_inner_core

    Earth's inner core is the innermost geologic layer of the planet Earth. It is primarily a solid ball with a radius of about 1,220 km (760 mi), which is about 20% of Earth's radius or 70% of the Moon's radius. [1] [2] There are no samples of the core accessible for direct measurement, as there are for Earth's mantle. [3]

  4. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    Earth has a liquid outer core that generates a magnetosphere capable of deflecting most of the destructive solar winds and cosmic radiation. Earth has a dynamic atmosphere, which sustains Earth's surface conditions and protects it from most meteoroids and UV-light at entry. It has a composition of primarily nitrogen and oxygen.

  5. Scientists find evidence of a new layer at the Earth's inner core

    www.aol.com/news/earth-new-layer-innermost-inner...

    The findings open up new ways to investigate the inner core, according to lead author Thanh-Son Phạm. ANU also believes the innermost inner core hints at a major event in Earth's past that had a ...

  6. Earth’s core has slowed so much it’s moving backward ...

    www.aol.com/scientists-ve-confirmed-slowdown...

    By tracking seismic waves from earthquakes that have passed through the Earth’s inner core along similar paths since 1964, the authors of the 2023 study found that the spin followed a 70-year ...

  7. Scientists might have found an inner-inner Earth's core - AOL

    www.aol.com/news/2015-02-11-scientists-might...

    Earth's inner core, a super-hot and super-compressed ball of iron smaller than the moon, helps generate the Earth's magnetic field and, by extension, the aurora borealis -- or Northern Lights.