Two enormous, enigmatic formations have been found beneath Africa and the Pacific Ocean, and their composition and origin remain unknown.
Researchers have proposed several theories to explain these subterranean structures. One hypothesis posits that they developed over billions of years through the accumulation of oceanic crust.
However, another theory suggests that these structures are the remnants of an ancient planet that collided with Earth approximately 4.5 billion years ago, potentially a planet similar in size to Mars.
This impact may not only have shaped Earth as we know it, but could also have ejected enough debris to create the Moon.
Several scientists speculate that remnants of this missing planet have descended deep into the Earth's core, coming to rest just above the core.
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