astronomy

Joseph-Louis Lagrange and the Celestial Mechanics

Joseph-Louis Lagrange and the Celestial Mechanics

On April 10, 1813, Italian mathematician and astronomer Joseph-Louis Lagrange passed away. Lagrange made significant contributions to the fields of analysis, number theory, and both classical and celestial mechanics. Lagrange was born on January 25, 1736 as Giuseppe Ludovico Lagrangia in Turin, previously capital of the duchy of Savoy, but became the capital of the kingdom of Sardinia in 1720. His father was Giuseppe Francesco Lodovico Lagrangia, Treasurer of the Office of…
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Giordano Bruno and the Wonders of the Universe

Giordano Bruno and the Wonders of the Universe

On February 17, 1600, Dominican friar, philosopher, mathematician and astronomer Giordano Bruno was burned on the stake after the Roman Inquisition found him guilty of heresy. His cosmological theories went beyond the Copernican model in proposing that the Sun was essentially a star, and moreover, that the universe contained an infinite number of inhabited worlds populated by other intelligent beings. Giordano Bruno was born as Filippo Bruno in Nola,  in the Kingdom…
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The Astronomical Machines of Johannes Stöffler

The Astronomical Machines of Johannes Stöffler

On February 16, 1531, German mathematician, astronomer, astrologer, priest, and maker of astronomical instruments Johannes Stöffler passed away. Stöffler was the first professor of astronomy at the University of Tübingen. At the end of the 1490s, Stöffler calculated a continuation of Regiomontan’s ephemeris [1] and constructed an equator for Johannes Reuchlin – an analog calculating machine for the direct location of a planet‘s position at a given point in time. Johannes Stöffler attended the…
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Caroline Herschel – The Comet Sweeper

Caroline Herschel – The Comet Sweeper

On January 9, 1848, Caroline Lucretia Herschel, German-British astronomer and sister of astronomer Sir William Herschel, passed away at age 98. She is best know for the discovery of several comets, in particular the periodic comet 35P/Herschel-Rigollet, which bears her name. Caroline Herschel grew up in the German town Hannover where she worked at her parent‘s home as a housekeeper and received a musical education followed by a starting career as a concert…
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The Celestial Mechanics of Anders Johann Lexell

The Celestial Mechanics of Anders Johann Lexell

On December 24, 1740, Finnish-Swedish astronomer, mathematician, and physicist Anders Johann Lexell was born. Lexell made important discoveries in polygonometry and celestial mechanics; the latter led to a comet named in his honour. La Grande Encyclopédie states that he was the prominent mathematician of his time who contributed to spherical trigonometry with new and interesting solutions, which he took as a basis for his research of comet and planet motion. His name…
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James Challis and his failure to discover the planet Neptune

James Challis and his failure to discover the planet Neptune

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. 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 Mill Hill School,…
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Benjamin Apthorp Gould and the stars of the Southern Hemisphere

Benjamin Apthorp Gould and the stars of the Southern Hemisphere

On September 27, 1824, American astronomer Benjamin Apthorp Gould was born. Gould is noted for creating the Astronomical Journal, discovering the Gould Belt, and for founding of the Argentine National Observatory and the Argentine National Weather Service. His star catalogs helped fix the list of constellations of the Southern Hemisphere. Benjamin Apthorp Gould attended Harvard University and graduated in 1844. He continued his education in Germany, more specifically in Göttingen. Gould studied mathematics…
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Jean Sylvain Bailly and the Orbit of Halley’s Comet

Jean Sylvain Bailly and the Orbit of Halley’s Comet

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. Jean Sylvain Bailly came from a family of artists. His father was an artist and supervisor of the…
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Astronomer James Jeans

Astronomer James Jeans

On September 11, 1877, English physicist, astronomer and mathematician James Hopwood Jeans was born. Jeans was the first to propose that matter is continuously created throughout the universe. He made other innovations in astronomical theory but is perhaps best known as a writer of popular books about astronomy. James Jeans was attended several schools, he joined Merchant Taylors’ School, Northwood, Wilson’s Grammar School, as well as Camberwell and Trinity College, Cambridge.  At Cambridge, he…
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James Keeler and the Rings of Saturn

James Keeler and the Rings of Saturn

On September 10, 1857, American astronomer James Edward Keeler was born. Keeler is best known for being the astronomer who confirmed James Clerk Maxwell‘s theory that the rings of Saturn were not solid (requiring uniform rotation), but composed of meteoric particles. James Edward Keeler was born in La Salle, Illinois, to William F. Keeler, who served as a paymaster in the U.S. Navy at the time of the American Civil War, and…
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