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KF5JRV > TODAY    23.09.24 13:43l 13 Lines 1084 Bytes #999 (0) @ WW
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Subj: Today in History - Sep 23
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Sent: 240923/1132Z 1587@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.23

German astronomer Johann Gottfried Galle discovers the planet Neptune at the Berlin Observatory.

Neptune, generally the eighth planet from the sun, was postulated by the French astronomer Urbain-Jean-Joseph Le Verrier, who calculated the approximate location of the planet by studying gravity-induced disturbances in the motions of Uranus. On September 23, 1846, Le Verrier informed Galle of his findings, and the same night Galle and his assistant Heinrich Louis dâ€ÖArrest identified Neptune at their observatory in Berlin. Noting its movement relative to background stars over 24 hours confirmed that it was a planet.

The blue gas giant, which has a diameter four times that of Earth, was named for the Roman god of the sea. It has 14 known moons, of which Triton is the largest, and a ring system containing three bright and two dim rings. It completes an orbit of the sun once every 165 years. In 1989, the U.S. planetary spacecraft Voyager 2 was the first human spacecraft to visit Neptune.


 73 de Scott KF5JRV

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