Story thread · 2 reports / 2 sources
Neptune discovered on this date 180 years ago
earthsky.org · 17h · first report
Read the fascinating story of the discovery of Neptune - 180 years ago - on September 23, 1846. It was the 1st planet to be discovered by using mathematics. The post Neptune discovered on this date 180 years ago first appeared on EarthSky .
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- Following Neptune Through Opposition 2026
universetoday.com · 14h
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