Here's what's interesting: The one and only source of information we have on this interesting little tidbit comes some 37 years after Joseph Smith's death from an entry in one Oliver Huntington's journal. Mr. Huntington claimed to have heard this from Philo Dibble. So, we have a late, third-hand account of something Joseph was reported to have said nearly 40 years earlier. Apparently, what is now referred to as "the Great Moon Hoax" was a series of six articles published in a New York newspaper beginning in 1835. Supposedly, a civilization had been discovered on the moon. This discovery was falsely attributed to one of the best-known astronomers of that time, a man by the name of Sir John Herschel. A great many people apparently fell for the hoax, and possibly Joseph Smith was one of them. How anyone can presume to make it sound as if this was actually taught by Joseph Smith as Mormon doctrine is positively laughable, but guess some people are just desperate for attention and they don't care how stupid they look in the process of getting it.