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  2. Earth's inner core - Wikipedia

    en.wikipedia.org/wiki/Earth's_inner_core

    Schematic of the Earth's inner core and outer core motion and the magnetic field it generates. The Earth's inner core is thought to be slowly growing as the liquid outer core at the boundary with the inner core cools and solidifies due to the gradual cooling of the Earth's interior (about 100 degrees Celsius per billion years). [49]

  3. 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.

  4. Planetary core - Wikipedia

    en.wikipedia.org/wiki/Planetary_core

    The internal structure of the inner planets. The internal structure of the outer planets. A planetary core consists of the innermost layers of a planet. [1] Cores may be entirely liquid, or a mixture of solid and liquid layers as is the case in the Earth. [2]

  5. The spinning of Earth's inner core is slowing down. Is this ...

    www.aol.com/news/spinning-earths-inner-core...

    A USC professor has confirmed what many scientists already believed: Rotation of the solid iron ball at Earth's center is slowing. The spinning of Earth's inner core is slowing down. Is this how ...

  6. The Earth's iron core isn't just a solid mass

    www.aol.com/news/earths-iron-core-isnt-just...

    A new study by physicists discovers that the Earth's dense inner core is made up of constantly switching iron atoms. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call

  7. Earth’s core might be reversing its spin. It ‘won’t affect ...

    www.aol.com/news/earth-core-might-reversing-spin...

    The inner core can spin independently because it is encased in a liquid outer core, similar to an egg yolk inside the more fluid egg white.

  8. Earth's outer core - Wikipedia

    en.wikipedia.org/wiki/Earth's_outer_core

    The outer core of Earth is liquid, unlike its inner core, which is solid. [5] Evidence for a fluid outer core includes seismology which shows that seismic shear-waves are not transmitted through the outer core. [6] Although having a composition similar to Earth's solid inner core, the outer core remains liquid as there is not enough pressure to ...

  9. 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.