Three members of which family, between 1781 and 1850, discovered Uranus, compiled a star catalogue, mapped all the stars in the Northern hemisphere and founded an observatory to map those in the Southern?
Hershel Herschel Herschell Herschel family Herschel (disambiguation)
hershel herschell herschel family herschel disambiguation herschel
herschel
WikipediaEntity
Herschel