Continent-Sized Remnants Of An Alien World May Be Buried Deep Within Earth – HuffPost

A Mars-sized planet that collided with Earth in its infancy may have left two gigantic portions of itself deep within Earths core, scientists theorized in a new study.
According to a team led by Arizona State University geodynamics researcher Qian Yuan, the vanished planet, known as Theia, not only embedded some of itself inside the Earth, but likely also helped form the moon. The team presented a paper detailing the theory earlier this month at the 52nd Lunar and Planetary Science Conference 2021.
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