Mysterious "blobs" inside Earth may be from collision with a

A new study says the collision with a proto-planet called Theia 4.5 billion years ago left remnants deep inside Earth — and also created the moon.

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Pacific Ocean , Christian Schroeder , Scotland University Of Stirling , California Institute Of Technology , Giant Impact Hypothesis , California Institute , Robin Canup , Earth , Cheia , Blobs , Tian Yuan ,