Giovanni Cassini

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Giovanni Cassini

1. He also used the name Gian Domenico Cassini2.After moving to France in 1699 he set up the Paris Observatory3.In 1670 he created a topographic map of France 4. Around 1690 he was the first to observe differential rotation within Jupiter's atmosphere 5. By 1709 his eyesight began to deteriorate and by 1711 he was almost completely blind .


Some of Cassini's most important discoveries were found through his studies at the Paris Observatory. One of his earliest discoveries determined the distance from Earth to Mars through observations and computing parallax. One of Cassini's most important discoveries were finding four of Saturn's moons. In 1671 he discovered Lapetus, Rhea in 1672, & Tethys and Dione both in 1684 . Three years after discovering Saturn's 2nd moon Cassini discovered a division, now named after him, of the rings of Saturn. Along with discovering four of Saturn's moons he shares the discovery of the Great Red Spot on Jupiter with Robert Hooke.


Cassini's method of determining longitude & latitude was used to measure the size of France accuratley .Since 2004 the Cassini orbiter has studied Saturn & many of it's satellites, observed Jupiter, the Heliosphere and the theory of relativity .Cassini is the 4th space probe to visit Saturn and the 1st to enter it's orbit. It was renamed the Cassini Equinox in 2008 .Several craters are named after Cassini, 2 of which are on the moon and on Mars .


One of Astronomy's most important astronmers: Giovanni Cassini Born on June 8th, 1625 in Perinaldo, Italy and died on September 14th, 1712. Giovanni Cassini became a well known astronmer throughout the years thanks to his important scientific discoveries . As a young boy Cassini has always been interested in math and astrology. He was an astronomer at Panzano Observatory from 1648-1669, a professor at the University of Bologna and alos worked as a Director at the Paris Observatory .


Giovanni Cassini


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