Johannes Kepler

David Fabricius and the Wonders of the Heavens

David Fabricius and the Wonders of the Heavens

On August 13, 1596, German theologian and astronomer David Fabricius discovered the first known periodic variable star, which he called Mira Ceti (The ‘Wonder’ in the stellar constellation ‘Whale’). David Fabricius – Early Years David Fabricius was born in Esens, Lower Saxony and received a pretty good education, learning mostly Latin. In Braunschweig, he first gained a few experiences in astronomy. His teacher introduced him to astronomy as well as mathematics before…
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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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The Assassination of Wallenstein

The Assassination of Wallenstein

On February 25, 1634, Bohemian military leader and politician Count Albrecht von Wallenstein was assassinated at Cheb in Bohemia. An imperial generalissimo of the Thirty Year’s War, and Admiral of the Baltic Sea, he had made himself ruler of the lands of the Duchy of Friedland in northern Bohemia. Wallenstein found himself released from imperial service in 1630 after Emperor Ferdinand grew wary of his ambition. “We act as we must. So…
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Jeremiah Horrocks and the Transit of Venus

Jeremiah Horrocks and the Transit of Venus

On January 3, 1641, English astronomer Jeremiah Horrocks passed away. He was the first scientist to demonstrate that the Moon moved around the Earth in an elliptical orbit and was the only person to predict the transit of Venus of 1639. Background Jeremiah Horrocks grew up in a well educated family and was introduced to astronomy in early years. He was occupied with many astronomical tasks as a young boy and enrolled at…
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Giuseppe Piazzi and the Discovery of Dwarf Planet Ceres

Giuseppe Piazzi and the Discovery of Dwarf Planet Ceres

On January 1, 1801, Italian Catholic priest of the Theatine order, mathematician, and astronomer Giuseppe Piazzi discovered Ceres, today known as the largest member of the asteroid belt. We already had several articles on almost all the planets of the Solar System, including the dwarf planets. [14] As you might know, our Solar System does not only comprise the Sun and the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Besides…
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Tycho Brahe – The Man with the Golden Nose

Tycho Brahe – The Man with the Golden Nose

On December 14, 1546, Danish nobleman and astronomer Tycho Brahe, known for his accurate and comprehensive astronomical and planetary observations was born. “Non haberi, sed esse.” “Not shine, but be.” – Tycho Brahe’s Election slogan Background Tycho Brahe was born at Knutstorp Castle, Scania, at that time Denmark, into a politically powerful family of noblemen and political advisors. He grew up with his uncle, also a nobleman, who supplied his nephew with a…
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Much More Powerful Than Expected – Kepler’s Supernova

Much More Powerful Than Expected – Kepler’s Supernova

On October 17, 1604, the famous German astronomer Johannes Kepler [5] started his observations of the 1604 supernova, named after him as Kepler’s Supernova or Kepler’s Star. Special about this ‘new’ star was it being the very last observed supernova in our own galaxy, the Milky way. First Sightings The supernova was first observed on 9 October 1604 by Ilario Altobelli in Verona and Raffaello Gualterotti in Florence, a few days before Kepler…
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Sir Isaac Newton and the famous Principia

Sir Isaac Newton and the famous Principia

On July 5, 1687, Sir Isaac Newton published his Philosophiae Naturalis Principia Mathematica (in Latin). The Principia states Newton’s laws of motion, forming the foundation of classical mechanics; Newton’s law of universal gravitation; and a derivation of Kepler’s laws of planetary motion (which Kepler first obtained empirically).[6] It is to be considered as the most influential work of Isaac Newton and as one of the greatest scientific works of all time. “The ancients…
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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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Standing on the Shoulders of Giants – Sir Isaac Newton

Standing on the Shoulders of Giants – Sir Isaac Newton

On January 4, 1643 [N.S.] (25 December 1642 [O.S.]), Sir Isaac Newton, famous physicist, mathematician, astronomer, natural philosopher, alchemist and theologian, was born. With his Principia Newton laid the foundation of modern classical mechanics. Besides he constructed the very first reflecting telescope and independent of Gottfried Wilhelm Leibniz developed differential and integral calculus [10]. “We are to admit no more causes of natural things than such as are both true and sufficient to…
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