On this day in 1714 – June 17th – French astronomer and cartographer Caesar-François Cassini de Thury was born in Thury-sous-Clermont in northern France.

He was the grandson of Jean Dominique Cassini - after whom the Cassini mission to Saturn was named - and the third Cassini to be the director of the Paris Observatory.

Mona Evans
For news, activities, pictures and more, sign up to the Astronomy Newsletter!