Discovery of Enceladus

Date: August 28, 1789 • Location: London, United Kingdom

With the first use of his 1.2-metre (3.9 ft) telescope, then the largest in the world, William Herschel discovered a new moon of Saturn, later named Enceladus (pictured).

Frederick William Herschel, generally known as William Herschel, was a German–British astronomer and composer. He frequently collaborated with his younger sister and fellow astronomer Caroline Herschel. Born in the Electorate of Hanover, he followed his father into the military band of Hanover, before emigrating to Britain in 1757 at the age of 19.