Sir William Herschel was an astronomer who is best known for discovering Uranus and several moons while compiling a catalog of more than 2,500 celestial objects that is still in use today. He was assisted for decades by his younger sister and fellow astronomer, Caroline Herschel. When he collected her from the family home in Germany to assist him in England, he liberated her from an awful existence , and she was forever grateful--and indebted--to him. Caroline and William Herschel are the main