Summary:
- Researchers have identified evidence of Theia, an ancient protoplanet, embedded deep within the Earth's mantle in the form of large, dense regions known as Large Low-Shear-Velocity Provinces (LLSVPs).
- The study suggests that during the "Giant Impact" hypothesis event 4.5 billion years ago, material from Theia was incorporated into the Earth rather than being entirely ejected, providing a potential explanation for the anomalous seismic signatures observed beneath Africa and the Pacific Ocean.