In 1846, French astronomer Urbain Le Verrier predicted the position of an unseen eighth planet from irregularities in Uranus's orbit, and when he wrote to the Berlin Observatory, they found Neptune within a single degree of his coordinates on the very first night they looked

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In 1846, French astronomer Urbain Le Verrier predicted the position of an unseen eighth planet from irregularities in Uranus's orbit, and when he wrote to the Berlin Observatory, they found Neptune within a single degree of his coordinates on the very first night they looked

In September 1846, Urbain Le Verrier mailed coordinates for an unseen planet to the Berlin Observatory. Johann Galle found Neptune within a single degree of the prediction on the first night of searching — the first world discovered by mathematics before it was seen through glass.

August 4, 2026 at 8:05:08 PM GMT+1 * · permalink

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