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Halley’s Comet

astronomy
Friedrich Wilhelm Bessel and the Distances of Stars

Friedrich Wilhelm Bessel and the Distances of Stars

Harald Sack
On July 22, 1784, German mathematician and astronomer Friedrich Wilhelm Bessel was born. He is probably best known for his works in mathematics, where he discovered the eponymous Bessel-functions, which are critical for the solution of certain differential equations. Friedrich Wilhelm Bessel – Youth and Education Friedrich Wilhelm Bessel was born in Minden, Westfalia, as the second child of a large family with six daughters and three sons. His mother Friederike Ernestine…
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astronomy
Charles Messier and the Discovery of Nebulae

Charles Messier and the Discovery of Nebulae

Tabea Tietz
On June 26, 1730, French astronomer Charles Messier was born. He is best known for his publication of an astronomical catalogue consisting of nebulae and star clusters that came to be known as the 110 “Messier objects”. The purpose of the catalogue was to help astronomical observers, in particular comet hunters such as himself, distinguish between permanent and transient visually diffuse objects in the sky. “What caused me to undertake the catalog was…
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art
Giotto di Bondone – Making a Decisive Brake with the prevalent Style

Giotto di Bondone – Making a Decisive Brake with the prevalent Style

Harald Sack
On January 8, 1337, Italian painter and architect Giotto di Bondone passed away. He is regarded as the decisive pioneer of the Italian Renaissance (Rinascimento). Geniuses are Born as such Sources indicate that Giotto grew up in Florence as the son of the blacksmith Bondone. Most experts believe that Giotto was his real name. Others think that it is a short form of Ambrogio (Ambrogiotto) or Angelo (Angiolotto). His life is attested…
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astronomy
Sir Edmond Halley and his famous Comet

Sir Edmond Halley and his famous Comet

Tabea Tietz
On November 8, 1656, Sir Edmond Halley was born. The astronomer, geophysicist, mathematician, meteorologist, and physicist, was best known for computing the orbit of the eponymous Halley’s Comet.[9] “Wherefore, if, according to what we have already said, it should return again about the year 1758, candid posterity will not refuse to acknowledge that this was first discovered by an Englishman.” – Edmond Halley, as quoted in An Essay towards a History of…
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astronomy
Jean Bailly and the Orbit of Halley’s Comet

Jean Bailly and the Orbit of Halley’s Comet

Tabea Tietz
On September 15, 1736, French astronomer, mathematician, freemason, and political leader of the early part of the French Revolution Jean Sylvain Bailly was born. Bailly computed an orbit for Halley’s Comet (1759) and studied the four satellites of Jupiter then known. He was the first Mayor of Paris and presided over the Tennis Court Oath. “The motion of the stars calculated by the Hindus some 4500 years before vary not even a single…
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