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The Origin of the Moon

The Origin of the Moon

Most planetary scientists expected that lunar samples brought to back to Earth by the six Apollo missions would confirm one of three leading hypotheses of the Moon's origin. Instead, the samples left all three explanations unconfirmed, requiring the development of a new hypothesis for how the Moon formed. This video segment shows Apollo 15 astronauts collecting a type of rock (anorthosite) that is thought to represent the original crust of the Moon. This evidence helps explain the origins and relationship between Earth and Moon. The segment is three minutes fifty-seven seconds in length. A background essay and list of discussion questions are also provided.


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