💥The moon was created by a collision between Earth and Thea.
🌎The impact blasted a huge amount of material into orbit, which eventually formed the moon.
🔥Thea's material fell back to Earth and sank into the mantle, forming large low velocity provinces (LLVPs).
🔬Computer simulations support the theory that the LLVPs are remnants of Thea.
🌌This new theory challenges previous explanations for the origin of the moon and the nature of the LLVPs.