1846-09-23

Switch to the dark mode that's kinder on your eyes at night time.

Switch to the light mode that's kinder on your eyes at day time.

Switch to the dark mode that's kinder on your eyes at night time.

Switch to the light mode that's kinder on your eyes at day time.

This Day in History: 1846-09-23

(September 23, 1846)
Astronomer Johann Gottfried Galle discovered the planet Neptune on this day in 1846, thanks to the theoretical predictions of Urbain-Jean-Joseph Le Verrier and John Couch Adams.
photo source: wikimedia.org