""A Letter To The Right Honorable George Earl Of Macclesfield: Concerning An Apparent Motion Observed In Some Of The Fixed Stars"" is a scientific work written by James Bradley in 1747. The book is a letter addressed to the Earl of Macclesfield and discusses the apparent motion of some of the fixed stars. Bradley, an English astronomer and mathematician, was the first to observe this phenomenon, which he called ""aberration."" In the letter, he explains...