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2 unusual facts about Giovanni Domenico Cassini


Giovanni Domenico Cassini

Giordano Berti (a cura di), G.D. Cassini e le origini dell’astronomia moderna, catalogo della mostra svoltasi a Perinaldo -Im-, Palazzo Comunale, 31 agosto – 2 novembre 1997.

Maunder Minimum

This was not due to a lack of observations; during the 17th century, Giovanni Domenico Cassini carried out a systematic program of solar observations at the Observatoire de Paris, thanks to the astronomers Jean Picard and Philippe de La Hire.


Cassini Regio

It is named after Giovanni Cassini, the discoverer of Iapetus; 'Regio' is a term used in planetary geology for a large area that is strongly differentiated in colour or albedo from its surroundings.

Henri Cassini

He was also the great-great-grandson of famous Italian-French astronomer, Giovanni Domenico Cassini, discoverer of Jupiter's Great Red Spot and the Cassini division in Saturn's rings.

Rømer's determination of the speed of light

The Italian astronomer Giovanni Domenico Cassini had pioneered the use of the eclipses of the Galilean moons for longitude measurements, and published tables predicting when eclipses would be visible from a given location.


see also

Sidera

Sidera Lodoicea, name given by the astronomer Giovanni Domenico Cassini to the four moons of Saturn