Galileo Galilei

Voyager and the Exploration of Saturn

Voyager and the Exploration of Saturn

On August 25, 1981, American space probe Voyager 2 passed Saturn and transmitted stunning pictures of the ring planet. The space probe had been launched by NASA on August 20, 1977 to study the outer Solar System and eventually to push forward into interstellar space. Until today, operating for more than 30 years the spacecraft still receives routine commands and transmits data back to the Deep Space Network, a world-wide network of large…
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Regiomontanus – Forerunner of Modern Astronomy

Regiomontanus – Forerunner of Modern Astronomy

On June 6, 1436, German mathematician, astronomer, astrologer, translator, instrument maker and Catholic bishop Johannes Müller aus Königsberg was born, better known under the Latinized version of his name as Regiomontanus. His diligent and accurate observations, measurements and recordings paved the way for modern astronomers such as Tycho Brahe [4] and Nikolaus Copernicus.[5] Johannes Müller from Königsberg Johannes Müller from Königsberg, a small town in Lower Franconia, Germany, grew up in a well situated…
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Johannes Hevelius and his Selenographia

Johannes Hevelius and his Selenographia

On January 28, 1611, German astronomer Johannes Hevelius was born. From four years’ telescopic study of the Moon, using telescopes of long focal power, Hevelius compiled Selenographia (“Pictures of the Moon“, 1647), an atlas of the Moon with some of the earliest detailed maps. Family Background and Early Years Johannes Hevelius‘ father was a succesful merchant and pushed Johannes to follow his footsteps rather than pursue a scientific career. Hevelius was sent to Poland…
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Galileo and the Exploration of the Jovian  System

Galileo and the Exploration of the Jovian System

On October 18, 1989, the unmanned NASA spacecraft Galileo was launched on her mission to study the planet Jupiter and its moons. Named after the astronomer Galileo Galilei, it consisted of an orbiter and entry probe, which descended into Jupiter‘s atmosphere. The Galilean Moons It was Galileo Galilei,[4] who connected us to the skies in 1609, when he demonstrated the improved instrument “for seeing things far away as if they were nearby”…
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Ole Rømer and the Speed of Light

Ole Rømer and the Speed of Light

On October 5, 1644 (or according to the old julian calendar September 25), Danish astronomer Ole Christensen Rømer was born. He became known by the first proof published in 1676 that the speed of light is finite and not infinite, respectively by the guidance, how the speed of light can be calculated by observation of the Jupiter moons. Ole Rømer – Early Years Ole Rømer was born in Århus, Denmark, to merchant and skipper…
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Hans Lippershey and the Telescope

Hans Lippershey and the Telescope

On October 2, 1608,  German-Dutch lensmaker Hans Lippershey applied to the States-General of the Netherlands for a patent for his instrument “for seeing things far away as if they were nearby”. Telescope History Even though scientists of the middle ages never heard of telescopes and most of them did not know specific laws of optics, they started laying the foundations for telescopes as we know them today. Before the invention of the telescope…
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Galileo Galilei and his Telescope

Galileo Galilei and his Telescope

On August 25, 1609, Galileo Galilei publicly demonstrated his newly built telescope to Venetian lawmakers. Besides its astronomical value Galileo‘s telescope was also a profitable sideline for him selling telescopes to merchants who found them useful both at sea and as items of trade. Galileo published his initial telescopic astronomical observations in March 1610 in a brief treatise entitled Sidereus Nuncius (Starry Messenger). Galileo Galilei Education and Early Career Galileo Galilei came from an…
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Elena Cornaro Piscopia – About the Difficulties to Receive a PhD in a Male Dominated Academia

Elena Cornaro Piscopia – About the Difficulties to Receive a PhD in a Male Dominated Academia

On June 25, 1678, Venetian philosopher of noble descent Elena Cornaro Piscopia, was the first woman to receive a Doctor of Philosophy degree. An extraordinary Child Elena Cornaro Piscopia was the fifth of seven children of the procurator of San Marco (Sestiere di Venezia), Gianbattista Corner, and his later wife Zanetta Boni. Her intellectual ability was noticed early, wherefore the local priest encouraged her family to enable Piscopia a formal education. She was then…
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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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Nicolaus Copernicus and the Heliocentric Model

Nicolaus Copernicus and the Heliocentric Model

On February 19, 1473, Renaissance mathematician and astronomer Nicolaus 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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