Space: The Moon drifts about 3.8 cm further from Earth every y…

Question

Did you know? The Moon drifts about 3.8 cm further from Earth every year — roughly as fast as your fingernails grow. Apollo 11 astronauts placed a laser reflector on the lunar surface in 1969; since then we have been able to measure the distance to within a millimetre.

Accepted Answer

The Moon drifts about 3.8 cm further from Earth every year — roughly as fast as your fingernails grow. Apollo 11 astronauts placed a laser reflector on the lunar surface in 1969; since then we have been able to measure the distance to within a millimetre.

De maan drijft elk jaar ongeveer 3,8 cm verder weg van de aarde — ongeveer net zo snel als je vingernagels groeien. Astronauten van Apollo 11 plaatsten in 1969 een laser-reflector op het maanoppervlak; sindsdien meten we de afstand tot op de millimeter nauwkeurig.

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