This artist’s rendering shows the hot, molten Moon emerging from a synestia, a giant spinning donut of vaporized rock that formed when planet-sized objects collided. The synestia is in the process of condensing to form the Earth. This new model for the Moon’s origin answers outstanding questions about how the Moon’s composition compares to that of Earth. Credit: Image by Sarah Stewart/UC Davis based on NASA rendering.
A new explanation for the Moon’s origin has it forming inside the Earth when our planet was a seething, spinning cloud of vaporized rock, called a synestia. The new model led by researchers at the University of California, Davis and Harvard University resolves several problems in lunar formation...
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