Nikolaus Copernicus

Aristarchus of Samos – Putting the Sun at the Right Place

Aristarchus of Samos – Putting the Sun at the Right Place

About 310 BC, ancient Greek astronomer and mathematician Aristarchus of Samos was born. He presented the first known model that placed the Sun at the center of the known universe with the Earth revolving around it. As Anaxagoras before him, he also suspected that the stars were just other bodies like the Sun. His astronomical ideas were often rejected in favor of the geocentric theories of Aristotle and Ptolemy. “The earth is…
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Ulugh Beg – the Mongolian Astronomer Prince

Ulugh Beg – the Mongolian Astronomer Prince

On March 22, 1394, Mongolian astronomer, mathematician and sultan Mīrzā Muhammad Tāraghay bin Shāhrukh, better known as Ulugh Beg was (probably) born. Although the only important Mongol scientist, he was the greatest astronomer of his time. Pursuing this interest he built an observatory at Samarkand. In his observations he discovered a number of errors in the computations of the 2nd-century Alexandrian astronomer Ptolemy, whose figures were still being used. “Religions scatter like…
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The Phantastic Life of Cyrano de Bergerac – Forerunner of Enlightenment

The Phantastic Life of Cyrano de Bergerac – Forerunner of Enlightenment

On March 6, 1619, French novelist, playwright, epistolarian and duelist Savinien de Cyrano de Bergerac was born. A bold and innovative author, his work was part of the libertine literature of the first half of the seventeenth century. Today he is best known as the inspiration for Edmond Rostand’s most noted drama Cyrano de Bergerac, which, although it includes elements of his life, also contains invention and myth. Cyrano – as he is…
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Nikolaus Copernicus and the Heliocentric Model

Nikolaus Copernicus and the Heliocentric Model

On February 19, 1473, Renaissance mathematician and astronomer Nikolaus Copernicus was born, who established the heliocentric model, which placed the Sun, rather than the Earth, at the center of the universe. With the publication of his research he started the so-called Copernican Recolution, which started a paradigm shift away from the former Ptolemaic model of the heavens, which postulated the Earth at the center of the universe, towards the heliocentric model with the…
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The Galileo Affair

The Galileo Affair

On February 13, 1633, Galileo Galilei arrived in Rome and was brought before the inquisitor Vincenzo Maculani to be charged for his defence of the Copernican theory in his writings. In the course of the trial, Galilei was found guilty and sentenced to house arrest for the rest of his life. All in all, Galileo is a frequent guest in our blog. Besides his life, we have already reported about his astronomical…
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Giovanni Domenico Cassini and the Moons of Saturn

Giovanni Domenico Cassini and the Moons of Saturn

On December 23, 1672, Italian astronomer Giovanni Domenico Cassini discovered Rhea, the 2nd largest of the 62 Saturn moons that are known by today. Background and Education Giovanni Cassini Cassini was born in Perinaldo (Liguria). He married the rich Geneviève de Laistre, became a French citizen in 1673 and began to write his first name Jean-Dominique. Cassini studied at the Jesuit College in Genoa and Bologna. Through the influence of the former…
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And Kepler Has His Own Opera – Kepler’s 3rd Planetary Law

And Kepler Has His Own Opera – Kepler’s 3rd Planetary Law

On May 15, 1618, famous astronomer Johannes Kepler discovered the 3rd and also last of his planetary laws, and concluded the general revolution of our celestial world that started with Nikolaus Kopernikus about 100 years earlier.[1] And that made him rather popular as he still is today. Did you know that there is a Kepler crater on the Moon, a Kepler crater on Mars, a Kepler asteroid, a Kepler supernova, of course there…
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