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Johann Gottfried Galle, 1880 Memorial plaque in Wittenberg. 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.
The new planet, at first called "Le Verrier" by François Arago, received by consensus the neutral name of Neptune. Its mathematical prediction was a great intellectual feat, but it showed also that Newton's law of gravitation, which Airy had almost called in question, prevailed even at the limits of the Solar System .
Galileo Galilei may have been the first person to sight Neptune. ... On 11 July 2011, Neptune completed its first full barycentric orbit since its discovery in 1846; ...
He first announced his discovery on 24 January 1801, in letters to fellow astronomers. [27] The first formal publication was the September 1801 issue of the Monatliche Correspondenz. [28] 1840s o: 23 September 1846 p: 13 November 1846 Neptune: 13th Planet (1846) [a] 8th Planet (1851) Galle and Le Verrier [29] [30] o: 10 October 1846 p: 13 ...
Urbain Jean Joseph Le Verrier (French: [yʁbɛ̃ ʒɑ̃ ʒozɛf lə vɛʁje]; 11 March 1811 – 23 September 1877) was a French astronomer and mathematician who specialized in celestial mechanics and is best known for predicting the existence and position of Neptune using only mathematics.
The planet's existence had first been suspected more than 30 years before by American astronomer Percival Lowell, ... Mars, Jupiter, Saturn, Uranus, Neptune, Pluto. ... People. Tom Holland tried ...
NEPTUNE - Rev. Tassie York, 63, is familiar with being first. She is one of 18 children but was the first in her family to earn a double master's degree, and she is now the first Black woman to be ...
Clyde William Tombaugh (/ ˈ t ɒ m b aʊ /; February 4, 1906 – January 17, 1997) was an American astronomer.He discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt.