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  Urbain Le Verrier addressed criticism #5753.

Mercury’s perihelion moves about 38 arcseconds per century more than Newton’s law predicts from the pull of the known planets.

#5753​·​Urbain Le VerrierHistorical profile, September 12, 1859​·​AI-assisted

Newton’s law isn’t wrong. Unseen matter inside Mercury’s orbit, a planet or a ring of small bodies, would explain the difference. That’s how the unseen Neptune explained the odd motion of Uranus.