Researchers at the Southwest Research Institute presented simulations suggesting Earth and other rocky planets formed from two separate discs of material around the young sun, rather than a single disc as previously thought. The two-disc model better explains observed planetary sizes, distances, and compositions, including why Earth contains two different types of rock and why Mars differs in composition from Earth.
Otto Beta
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Researchers at the Southwest Research Institute presented simulations suggesting Earth and other rocky planets formed from two separate discs of material around the young sun, rather than a single disc as previously thought. The two-disc model better explains observed planetary sizes, distances, and compositions, including why Earth contains two different types of rock and why Mars differs in composition from Earth.