Which planet in our solar system was discovered by Johann Galle and Heinrich D’Arrest in 1846?
Johann Gottfried Galle Galle, and a ring of Neptune have been named in his honor. Google celebrated Johann Gottfried Galle's 200th Birthday with Google Doodle https://www.google.com/doodles/johann-gottfried-galles-200th-birthday! Johann Gottfried Galle Johann Gottfried Galle (9 June 1812 – 10 July 1910) was a German astronomer from Radis, Germany, at the Berlin Observatory who, on 23 September 1846, with the assistance of student Heinrich Louis d'Arrest, was the first person to view the planet Neptune and know what he was looking at. Urbain Le Verrier had predicted the existence and position of Neptune, and sent the coordinates to Galle, asking him to verify. Galle found Neptune
Johann Gottfried Galle to 23 October 1706. Around the same time in 1845 he sent a copy of his thesis to Urbain Le Verrier, but only received an answer a year later. Sent on 18 September 1846, it reached Galle on the morning of 23 September. Le Verrier had been investigating the perturbations of the orbit of the planet Uranus and from this he derived the position of a still undiscovered planet, and requested Galle to search in the corresponding section of sky. The very same night (after Encke gave permission to search, against his own judgement), in collaboration with his assistant Heinrich