![Giovanni Cassini (1625-1712), Italian astronomer. As director of the Paris Observatory, Cassini added greatly to our knowledge of the Solar System. He Stock Photo - Alamy Giovanni Cassini (1625-1712), Italian astronomer. As director of the Paris Observatory, Cassini added greatly to our knowledge of the Solar System. He Stock Photo - Alamy](https://c8.alamy.com/comp/2ACFKMF/giovanni-cassini-1625-1712-italian-astronomer-as-director-of-the-paris-observatory-cassini-added-greatly-to-our-knowledge-of-the-solar-system-he-2ACFKMF.jpg)
Giovanni Cassini (1625-1712), Italian astronomer. As director of the Paris Observatory, Cassini added greatly to our knowledge of the Solar System. He Stock Photo - Alamy
In 1690, Giovanni Cassini was the first person to suggest that Jupiter could not be a solid planet. He noted that the planet was rotating at different rates depending on the latitude (
![Giovanni Domenico Cassini: A Modern Astronomer in the 17th Century (Springer Biographies) : Bernardi, Gabriella: Amazon.com.tr: Kitap Giovanni Domenico Cassini: A Modern Astronomer in the 17th Century (Springer Biographies) : Bernardi, Gabriella: Amazon.com.tr: Kitap](https://m.media-amazon.com/images/I/71SsMRpgo1L._AC_UF1000,1000_QL80_.jpg)
Giovanni Domenico Cassini: A Modern Astronomer in the 17th Century (Springer Biographies) : Bernardi, Gabriella: Amazon.com.tr: Kitap
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