The Cassini family is a notable lineage of Italian astronomers and mathematicians, primarily recognized for their contributions to the field of astronomy during the 17th and 18th centuries. The most famous member, Giovanni Domenico Cassini, discovered several of Saturn's moons and the division in its rings, known as the Cassini Division. His work significantly advanced the understanding of planetary science. Other members of the family, including Jacques Cassini and César-François Cassini, continued this legacy, contributing to cartography and astronomy. The family's influence extended to the establishment of the Paris Observatory, where they played a crucial role in astronomical research and education.