On a similar note, the Large low-shear-velocity provinces (LLSVPs) are structures in Earth's lower mantle that are hyothized to be remnants of Theia (the planet

On a similar note, the Large low-shear-velocity provinces (LLSVPs) are structures in Earth's lower mantle that are hyothized to be remnants of Theia (the planetary-scale body that collied with, resulting in the formation of the Moon): https://www.nature.com/articles/s41586-023-06589-1 https://www.nature.com/articles/s41586-023-06589-1