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Johann Gottfried Galle

astronomy
The Astronomical Achievements of Sir George Biddell Airy

The Astronomical Achievements of Sir George Biddell Airy

Tabea Tietz
On July 27, 1801, English mathematician, astronomer, and Astronomer Royal George Biddell Airy was born. His many achievements include work on planetary orbits, measuring the mean density of the Earth, a method of solution of two-dimensional problems in solid mechanics and, in his role as Astronomer Royal, establishing Greenwich as the location of the prime meridian. “It is not simply that a clear understanding is acquired of the movements of the great bodies which we regard as the system of the…
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astronomy
John Couch Adams and the Discovery of Planet Neptune

John Couch Adams and the Discovery of Planet Neptune

Harald Sack
On January 21, 1821, English mathematician and astronomer John Couch Adams passed away. Adams most famous achievement was predicting the existence and position of Neptune, using only mathematics. The calculations were made to explain discrepancies with Uranus‘s orbit and the laws of Kepler and Newton. At the same time, but unknown to each other, the same calculations were made by Urbain Le Verrier.[5] Youth and Education John Couch Adams was born at…
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astronomy
William Lassell and the Discovery of the Uranus Moons Ariel and Umbriel

William Lassell and the Discovery of the Uranus Moons Ariel and Umbriel

Tabea Tietz
On October 24, 1851, English merchant and astronomer William Lassell discovered Ariel and Umbriel, two moons of planet Uranus. Besides, he also discovered the Neptune moon Triton and the Saturn moon Hyperion. William Lassell – Early Years William Lassell was born in Bolton, Lancashire, UK,  and educated in Rochdale Academy. He was apprenticed to a merchant in Liverpool and later became a beer brewer and hobby astronomer. Lassell built himself an observatory…
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astronomy
Johann Gottfried Galle and the First Observation of Planet Neptune

Johann Gottfried Galle and the First Observation of Planet Neptune

Tabea Tietz
On June 9, 1812, German astronomer Johann Gottfried Galle was born. Galle actually was the first person to view the planet Neptune and know what he was looking at, by making use of the calculations of his fellow astronomer Urbain Le Verrier. Background Johann Gottfried Galle Johann Gottfried Galle studied at the Friedrich-Wilhelms-Universität Berlin between 1839 and 1833 and started to work at the new Berlin Observatory two years later. There, he worked…
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astronomy
Neptune, Oceanos, or ‘Le Verrier’ – How to name a new planet?

Neptune, Oceanos, or ‘Le Verrier’ – How to name a new planet?

Tabea Tietz
On June 9, 1812, German astronomer Johann Gottfried Galle was born. Also in Germany hardly anybody might know Galle today. Well, maybe except most astronomers, who will certainly know him, because he has discovered the planet Neptune. No, he didn’t do it all by himself. Actually, we’ve had already several articles on astronomers involved in the discovery of Neptune [5,6,7] Johann Gottfried Galle – Early Life Galle was born in the Pabsthaus not…
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astronomy
James Challis and his failure to discover the planet Neptune

James Challis and his failure to discover the planet Neptune

Harald Sack
On December 12, 1803, English clergyman, physicist and astronomer James Challis was born. Challis investigated a wide range of physical phenomena though made few lasting contributions outside astronomy. He is best remembered for his missed opportunity to discover the planet Neptune in 1846. Early Years James Challis was born in Braintree, Essex, UK, where his father, John Challis, was a stonemason. After attending Braintree School, the Revd Daniel Copsey’s school, Braintree, and…
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astronomy
William Lassell and the Discovery of Triton

William Lassell and the Discovery of Triton

Harald Sack
On October 10, 1846, English merchant and astronomer William Lassell discovered Triton, the largest moon of Neptune, just 17 days after the discovery of Neptune itself by German astronomer Johann Gottfried Galle. Besides, Lassell also discovered Ariel and Umbriel, two moons of planet Uranus [3], as well the Saturn moon Hyperion. Triton – A very special Satellite Lassell started a brewery business about 1825, after a seven-year apprenticeship. He became interested in astronomy…
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