Today marks the 45th anniversary of the Apollo 11 launch, a mission in which real live men (including Buzz Aldrin) set foot on Earth’s moon. If you’re among the skeptical, you might believe it’s the 45th anniversary of the time when the U.S. government pulled off the greatest hoax in history.

Bart Sibrel is one of those men (a conspiracy theorist, not an astronaut). In 2002, he found and cornered Buzz Aldrin, asking him to “swear on the Bible” that he walked on the moon. Aldrin refused, likely because walking on the moon forever absolved him from having to pay any mind to nutjobs like Sibrel. Sibrel went on to call him a liar and a thief for taking money for participating in the “hoax.”

As seen in the video below, Aldrin apparently considers them fightin’ words:

Not a bad right cross for a man his age. Three days from now, on July 20, we’ll celebrate the day Neil Armstrong and Aldrin actually set foot on the moon in 1969 (it takes a few days to actually get there). Will there be more news? Definitely. Will there be more astronaut fisticuffs videos? One can only dream.

Where were you when mankind first landed on the moon? “Going to space is a big deal. Walking on the moon is, literally, walking on the moon,” said singer-songwriter Pharrell Williams, who was born four years later.