December 7, 2019

Astro-Challenge: Spot Neptune in its Original Discovery Position!

In this week’s astro-event, we challenge you, the sky watching public, to view the planet Neptune as it was first seen on the night of its discovery on September 23, 1846. On that evening, astronomer Johann Galle turned the Berlin Observatories’ 9-inch refractor on a position given to him by French mathematician Urbain Jean-Joseph Le Verrier, and the solar system hasn’t been the same since. The discovery of Neptune was a triumph for predictive mathematics and a good test of Newtonian mechanics in a celestial format.

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