William Lassell

William Lassell
Born(1799-06-18)18 June 1799
Bolton, England
Died5 October 1880(1880-10-05) (aged 81)
Maidenhead, England
Known forDiscovered the moons Triton, Hyperion, Ariel and Umbriel
Awards
Scientific career
FieldsAstronomer

William Lassell (18 June 1799 – 5 October 1880) was an English merchant and astronomer. He is remembered for his improvements to the reflecting telescope and his ensuing discoveries of four planetary satellites.