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What happened on September 23 in history? This is the story Historai has told for this date. Listen, or read the transcript and sources.
September 23, 1846
The discovery of Neptune on September 23, 1846
A French mathematician insisted an unseen planet was tugging at Uranus — then told astronomers exactly where to point. What happened next in a Berlin observatory sparked one of science's ugliest fights over credit.
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