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Full Idea
When scientists observed the motion of Uranus, they did not give up on Newtonian mechanics. Instead they posited the existence of Neptune.
Gist of Idea
The anomaly of Uranus didn't destroy Newton's mechanics - it led to Neptune's discovery
Source
W.H. Newton-Smith (The Rationality of Science [1981], III.9)
Book Ref
Newton-Smith,W.H.: 'The Rationality of Science' [RKP 1981], p.73