Bologna, Italy

Credit: Image credit: NASA/Landsat/UMD, Posted on: Friday, 2 July 2004, 06:00 CDT Download full size image

Located in north-central Italy on the southern edge of the Emilia-Romagna plains and the northern limit of the Apennine Mountains, the city of Bologna has been the site of human settlement for at least 3,000 years. Over this time, a succession of civilizations ruled the city: Villanovians, Etruscans, Galli Boi, Celts, Romans, and Christian Popes. In 1859 the city joined the nation of Italy. The University of Bologna (where Cassini was a professor of mathematics from 1650-68) was founded in 1088. It was Cassini who discovered the large gap in Saturn’s rings (through which the Cassini spacecraft flew on June 30, 2004, as it entered into orbit) and four of Saturn’s moons: Iapetus, Rhea, Tethy, and Dione. He also correctly theorized that the rings were composed of small particles orbiting Saturn.

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