The crew of Apollo 10 had an unusual experience as they passed over the far side of the Moon in May 1969. The three astronauts were alone and have cut off contact from Earth when they heard some “outer-space type music,” as they described it.
Recordings from that incident recently surfaced on the web, along with commentary from experts, thanks to Science Channel’s series called NASA Unexplained Files.
In the video, the crew can be seen discussing the strange tune they heard on their headsets. Astronaut Eugene Cernan said, “You hear that? That whistling sound? Whoooooo… Well that sure is weird music.”
Perhaps fearing that their mental stability will be questioned, the group decided to conceal the weird experience from NASA.
You can watch the video here:
Strange Space Music or Radio Module Interference?
On their report about this subject, CNN shed light regarding what the strange space music actually was. A simple explanation for the noise was that the “radios in the two spacecraft [the lunar module and the command module] were interfering with each other.”
This theory, however, is disputed by astronaut Al Worden who said “logic tells me that if there was something recorded on there, then there’s something there.”
Apollo 11 pilot Michael Collins, the first person to fly around the far side of the moon on his own (while Buzz Aldrin and Neil Armstrong were exploring the surface) also said he heard the sounds but didn’t give it much attention.
In his book “Carrying the Fire: An Astronaut’s Journeys,” he recalled:
“There is a strange noise in my headset now, an eerie woo-woo sound. Had I not been warned about it, it would have scared the hell out of me. Fortunately, the radio technicians (rather than the UFO fans) had a ready explanation for it: It was interference between the Lunar Module’s and Command Module’s VHF radios.”