A sister's memoir and collected letters recount the life and labors of Caroline Herschel, emphasizing her devotion as companion and collaborator to her brother William Herschel while documenting her own astronomical work. It traces early family recollections, practical responsibilities that sustained household and research, the acquisition of calculation and instrument-making skills, nocturnal observations and the discovery of several comets, and the painstaking transcription and preservation of scientific results. Personal anecdotes, family history, and extensive correspondence illustrate her humility, perseverance, and practical contribution to astronomy, culminating in later recognition by contemporaries and learned societies.