1835 Great Moon Hoax

Wiki

The “Great Moon Hoax” refers to a series of six articles that were published in The Sun, a New York newspaper, beginning on August 25, 1835, about the supposed discovery of life and even civilization on the Moon. The discoveries were falsely attributed to Sir John Herschel, one of the best-known astronomers of that time.

The story was advertised on August 21, 1835, as an upcoming feature allegedly reprinted from The Edinburgh Courant.[1] The first in a series of six was published four days later on August 25.