The Moon is moving away from the Earth at a rate of about 3.8 centimetres per year.
Why it is true
The gravitational interaction between the Earth and the Moon causes the Earth to lose rotational energy through tides. This effect causes the lunar orbit to slowly widen, which is precisely measured through laser reflectors left by the Apollo missions.
Source: NASA
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Related facts
The Moon is moving away from Earth 3.8 cm per year.
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The Moon is moving away from the Earth by about 4 centimetres per year.