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Rock from ANOTHER PLANET may be near Earth’s core after ancient collision

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Dr Pachhai said researchers believe that as a result of the collision, “a large body of molten material, known as a magma ocean, formed”.

The “magma ocean” would have cooled down over millennia, with dense materials sinking to the bottom of the mantle, according to the study.

The layers discovered could show areas where molten rock has still not mixed together after billions of years of convection currents – movement caused by heat the Earth’s core emits.

These ultra-low velocity zones allowed researchers to peer back into the planet’s origins.



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