“Boy, that sure is weird music.”
— “We’re going to have to find out about that. Nobody will believe us.”
— “Yes. It’s a whistling, you know, like an outer-space-type thing.”
In 1969, the Apollo 10 astronauts orbited the moon as a test-run for the Apollo 11 moon landing two months later. While they flew around the far side of the moon—which put them out of radio contact with Earth for roughly an hour—they heard some strange sounds that they could not immediately identify.