20. What is the Moon made of? (A K2S Question)

From The Space Library

One reason scientists think that the Moon came from an enormous impact long ago in Earth's history—the big whack theory—is that the abundance of elements in the Moon's crust are very similar to those found in the Earth's crust. These chemicals are all mixed together in the form of different minerals and rocks that make up the Moon. That's when we start getting in to things like pyroxenes and plagioclase feldspars and olivines. Heiken, G.H. et al, Lunar Sourcebook: a user's guide to the moon. Cambridge University Press, 1991. ISBN: 0-521-33444-6

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Answer provided by Thomas Matula, Ph.D. & Kenneth J. Murphy

Question and Answer extracted from the book Kids to Space - by Lonnie Schorer

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