HistoricalAstronomy

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    How Many Miles to the Moon?

    How Astronomers Measure the Distance to the Moon Astronomers use a variety of methods to measure the distance between the Earth and the Moon. One of the most accurate methods involves bouncing a laser beam off a mirror that was left on the Moon’s surface by the Apollo 11 mission in 1969. The process, known as Lunar Laser Ranging (LLR),…

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