The Great Moon Hoax

During the final week of August 1835, a long article appeared in serial form on the front page of the New York Sun. It bore the headline:

GREAT ASTRONOMICAL DISCOVERIES LATELY MADE BY SIR JOHN HERSCHEL, L.L.D. F.R.S. &c. At the Cape of Good Hope

The article began by triumphantly listing a series of stunning astronomical breakthroughs that the famous British astronomer, Sir John Herschel, had apparently made "by means of a telescope of vast dimensions and an entirely new principle." Herschel, the article declared, had established a "new theory of cometary phenomena"; he had discovered planets in other solar systems; and he had "solved or corrected nearly every leading problem of mathematical astronomy." Then, almost as if it were an afterthought, the article revealed Herschel's final, stunning achievement: he had discovered life on the moon!

Link