There Are Massive Chunks of Another Planet Inside Earth, Scientists Say

Researchers have long suspected that the Moon was formed after a Mars-sized protoplanet dubbed Theia smashed into the primordial Earth some 4.5 billion years ago. The literally Earth-shattering event caused huge amounts of debris to become dislodged, forming our planet's lonely satellite. Globs of the stuff may have also melted into the surface of the […]

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