Scientific Theories
Scientists Find Mysterious Structure Hidden Inside The Earth The Earth was formed from a solar nebula about 4.5 billion years ago, weighs 5972 yottagrams, and its radius is 6371 kilometers. The numbers are so impressive that it seems that scientists have studied absolutely everything about our planet. But this is far from the case. We know a lot about what is on the surface of the Earth.
Credit Destiny
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