Earth's Hidden Secret: Evidence of an Ancient Alien World Buried Within

Scientists at the California Institute of Technology believe that the planet, Theia, which collided with Earth billions of years ago, could still be inside Earth and may have led to the formation of the Moon. Dense material detected under large parts of Africa and the Pacific Ocean, known as large low-velocity provinces (LLVPs), is believed to be remnants of Theia. The LLVPs contain high levels of iron and react differently to seismic waves than surrounding solids. Further research is needed to understand why the remnants of Theia are grouped around Earth's mantle.