The Moon is moving away from Earth at approximately 3.8 centimeters per year, a phenomenon measured with millimeter precision using laser beams reflected off mirrors left by Apollo missions and Lunokhod. This recession imperceptibly lengthens Earth's day and will eventually cause total solar eclipses to become rarer and then disappear as the Moon's apparent diameter decreases, making it too small to completely obscure the Sun.
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Pourquoi la Lune s’éloigne de la Terre et ce que ça change pour notre planèteAdded:
You won't believe it, but the Moon is moving away from Earth by about 3.8 cm per year and we measure it to the nearest millimeter by reflecting laser beams off reflectors placed by the Apollo missions and the unocode. A retreat that imperceptibly lengthens the length of the Earth's day and that of the fate of total solar eclipses which, as the apparent diameter of the Moon decreases, will first become rarer and then disappear when our satellite appears too small to completely obscure the solar disk.
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