Astronomy Hoaxes

The Toledo Letter (1184)

A letter supposedly written by the astrologers of Toledo that began circulating throughout Europe in 1184. It predicted the world would end in September 1186, amidst awful calamities. People were advised to flee their homes and find safety in the mountains. The letter caused panic throughout Europe. Of course, the world didn't end, but that wasn't the end of the letter's career. Variants of it, with names and dates altered, continued to circulate for centuries, and continued to cause panic. more…

The Great Moon Hoax (1835)

The New York Sun announced that the British astronomer Sir John Herschel had discovered life on the moon by means of a new telescope "of vast dimensions and an entirely new principle." Creatures supposedly seen by Herschel included lunar bison, fire-wielding biped beavers, and winged "man-bats." The public was fascinated. It took several weeks before they realized it was all a hoax. more…

The Global Warming Hoax of 1874

in early February 1874, the Kansas City Times ran a story claiming that scientists had discovered that the transatlantic telegraph cables were acting like enormous electromagnets, pulling the earth into the sun. Calculations indicated that if the earth's current trajectory continued unchecked, Europe would become tropical in 12 years, and the entire earth would be uninhabitable soon after. Finally the planet would plunge into the sun. more…