It seems there have been practical jokers from the beginning of time. Many of the best hoaxes throughout history have involved astronomy or space. I searched for some of my favorite hoaxes and discovered many at the Museum of Hoaxes website. I've compiled many from there and elsewhere in the Top 10 Astronomy & Space Hoaxes Throughout History. There are also some other great hoaxes included in both the Top 10 Space Urban Legends - Myths & Bad Astronomy and More Top 10 Astronomy - Space Urban Legends - Myths and Truths and Bad Astronomy.