NASA’s Apollo 10 astronauts orbited the moon in 1969 as a test-run for the Apollo 11 moon landing two months later. While they flew around the far side of the moon, consequently putting them out of radio contact with Earth for roughly an hour, they heard some bizarre sounds that puzzled them. The entire conversation was initially kept under wraps by NASA and only released from their archives in 2008, but the actual recording of the sounds were classified, until now. Continue reading for part 2 of the video series. Click here for bonus images from the Apollo moon missions.
“The Apollo 10 crew was very used to the kind of noise that they should be hearing. Logic tells me that if there was something recorded on there, then there was something there,” said Apollo 15 astronaut Al Worden.