Giovanni cassini biography
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Jean-Dominique Cassini: Astrology to astronomy
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ESA / About Us / ESA history
One of the most important astronomers of the 17th and 18th centuries, Jean-Dominique Cassini became interested in astronomy through his early fascination with astrology.
Cassini was born Giovanni Domenico Cassini in Perinald, Imperia, Italy, on 8 June Because of his interest in astrology and the emerging discipline of science, he was employed by a rich amateur astronomer, Marquis Cornelio Malvasia, in Bologna.
Here, Cassini indulged his passion for the skies using the Marquis’s instruments and was taught by Jesuit scientists. His work was exceptional in its quality and precision and formed the grounding for his later prestigious academic positions.
In his thirties, Cassini worked for the Bolognese government and simultaneously held the chair at the University of Bologna. His work included observations of the Sun but, as he obtained more powerful telescopes, he turned his attention to the planets.
Cassini needed bigger buildings to house these new instruments. He placed his 'Meridiana' instrument in the San Petronio Cathedral, and used it to compute the exact date of Easter based on the apparent motion of the Sun across the sky. In , he used observations of Mar
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Giovanni Domenico Cassini
Italian-French mathematician and astronomer (–)
This article is about the Italian-born astronomer. For his French-born great-grandson, see Dominique, comte de Cassini. For his French-born grandson, see César-François Cassini de Thury.
Giovanni[a]Domenico Cassini, also known as Jean-Dominique Cassini (8 June – 14 September ) was an Italian (naturalised French)[1]mathematician, astronomer, astrologer and engineer. Cassini was born in Perinaldo,[2][3] near Imperia, at that time in the County of Nice, part of the Savoyard state.[4][5] Cassini is known for his work on astronomy and engineering. He discovered four satellites of Saturn and noted the division of its rings; the Cassini Division was named after him. Giovanni Domenico Cassini was also the first of his family to begin work on the project of creating a topographic map of France. In addition, Cassini also created the first scientific map of the moon. [6]
The Cassini space probe, launched in , was named after him and became the fourth to visit Saturn and the first to orbit it.
Life
[edit]Time in Italy
[edit]Cassini was the son of Jacopo Cassini, a Tuscan, and Giulia Crovesi. In Cassini accepted a position at
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Giovanni Domenico Cassini
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