Born the youngest daughter of a poor family in Hanover, Germany, Caroline was scarred from smallpox, stunted from typhus, and used by her parents as a scullery maid. But when her favorite brother, William, left for England, he took her with him. The siblings shared a passion for stars, and together they built the greatest telescope of their age, working tirelessly on star charts. Using their telescope, Caroline discovered fourteen nebulae and two...