In the fission theory of the Moon s origin

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The fission theory proposes that the Moon broke off from a rapidly spinning Earth early in its history. This theory suggests that the early Earth was rotating so rapidly that it became unstable, and a large portion of the mantle and crust broke off and formed the Moon. This theory is supported by the fact that the Moon's composition is similar to Earth's mantle, and the Moon's orbit and rotation are closely tied to the Earth's. According to the fission theory, the Moon broke off from a rapidly spinning Earth due to centrifugal force. This theory suggests that early in Earth's formation, the planet was spinning so rapidly that material was ejected from its equator and eventually accreted to form the Moon.

In the Fission Theory of the Moon S Origin