8 June

Giovanni Domenico Cassini, 1625-1712
27 FEB. 2004 publication date 1403 Views

1625: On 8 June 1625, the French-Italian scientist Giovanni Cassini was born.

He was the most notable space observer since Galileo. Heading the Paris Observatory for many years, Cassini was the first to observe seasonal changes on Mars and measure its parallax (distance from Earth), setting the scale of the Solar System for the first time. He was the first to describe the bands and spots on Jupiter, and studied the orbits of Jupiter's moons.

He discovered four moons around Saturn, but is best remembered for first seeing the division (now named after him) between the ‘A’ and ‘B’ rings around Saturn.


Related links

Meteosat-4 Earth image
Will Huygens land or splashdown on Titan?
Beagle 2 lander is ejected from the Mars Express orbiter
The Cluster quartet

stay updated

Subscribe to our newsletter to receive the latest news, mission updates, and exclusive insights directly in your inbox. Be the first to know about our upcoming projects and breakthroughs.