Fission Theory - A theory for the origin of the Moon in which the Moon consists of matter that was flung from the primitive Earth because of the Earth's rapid rotation ...
The Fission Theory: This theory proposes that the Moon was once part of the Earth and somehow separated from the Earth early in the history of the solar system.
The Fission Theory: The Moon was once part of the Earth and somehow separated from the Earth early in the history of the Solar System. The present Pacific Ocean basin is the most popular site for the part of the Earth from which the Moon came.
For another, "it simply explains too many observations", including the similar oxygen isotope ratios between the Moon and the Earth, and the of the Earth-Moon system. The capture theory has difficulty with the former, while the fission theory cannot ...
 See also: Field, Planet, Earth, Mars, Solar System
  
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