A remnant of a protoplanet may be hiding inside Earth – Livescience.com

A protoplanet slammed into the Earth about 4.5 billion years ago, knocking loose a chunk of rock that would later become the moon
. Now, scientists say that remnants of that protoplanet can still be found, lodged deep inside Earth, Science Magazine reported
.
If remains of the protoplanet, known as Theia, did stick around after the impact, that may explain why two continent-size blobs of hot rock now lie in the Earth
‘s mantle, one beneath Africa and the other under the Pacific Ocean. These massive…

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