Johann gottfried galle biography of abraham

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He worked in Breslau for over 45 years. Urbain Le Verrier had predicted the existence and position of Neptune, and sent the coordinates to Galle, asking him to verify.[1] Galle found Neptune in the same night he received Le Verrier's letter, within 1° of the predicted position.

johann gottfried galle biography of abraham

The town of Gräfenhainichen, which is close to his birthplace, erected a memorial to him in 1977.

Berlin Observatory

He had started to work as an assistant to Johann Franz Encke in 1835 immediately following the completion of the new Berlin Observatory. In 1847, he produced a supplement to Olber’s list of the orbital details of comets.

Legacy and Death

In 1851, after the death of Breslau Observatory’s director, Galle was offered the position, as well as a professorial role.

Otherwise he concerned himself with the Earth's magnetic field and climatology. He carried on with his work with Encke in Berlin and provided a large number of measurements of the distance of binary stars. From 2 December 1839 to 6 March 1840 he discovered three new comets. William B. Ashworth, Jr., Consultant for the History of Science, Linda Hall Library and Associate Professor, Department of History, University of Missouri-Kansas City.

In 1838 he discovered an inner, dark ring of Saturn. 9, 1812
Radis, GermanyDiedJul. Nearly every astronomer has an extraterrestrial crater named after him or her. For the academic year 1875/76 he was elected Rector.[4] At Breslau he dealt with the exact determination of planetary orbits and developed methods for calculating the height of the aurorae and the path of meteors, and consolidated the data for all 414 comets discovered up to 1894 into one work (with the help of his son).

Meanwhile, he had been asked by Alexander von Humboldt to collaborate on astronomical computations, and the two men continued to associate professionally for a decade and a half. He attended the Gymnasium in Wittenberg and studied at Friedrich-Wilhelms-Universität Berlin from 1830 to 1833.

Two craters, one on the Moon and the "happy face" one on Mars, the asteroid 2097 Galle, and a ring of Neptune have been named in his honor.

After him are Sosigenes of Alexandria, William Lassell, Robert Woodrow Wilson, Vesto Slipher, Johannes Hevelius, and Asaph Hall.

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Contemporaries

Among people born in 1812, Johann Gottfried Galle ranks 3.

Soon after, he was searching the region that Le Varrier had mentioned, though with no success. Galle, wanting to improve his knowledge of the relevant theories, attended a number of Encke’s lectures during this period.

Discovering Neptune

In 1839, Galle began a 30-year stint as the calculator of the ephemerids of the minor planet Pallas for an astronomy yearbook.

The portrait of Galle, made about 45 years after his discovery of Neptune (third image), is in the Leibniz Institute for Astrophysics in Potsdam.

Dr.

His work during this period was not ground-breaking, but he was a popular lecturer on the subject of comets and meteors, pointing out the links between the two.

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. Galle crater is also known as the "Happy-Face" crater, and a peek is a good way to start your day (third image).