In May 1969, the astronauts who flew the dress rehearsal for the first lunar landing testified hearing mysterious “outer space-type music” while flying behind the moon. The incident of the odd, mysterious ‘whistling noise’ is revealed during an upcoming episode of the Science Channel series, “NASA’s Unexplained Files.” The episode focuses on a bizarre event experienced by the crewmembers of Apollo 10, a mission that flew to the moon, entered lunar orbit and got within 5,000 feet of the moon’s surface in preparation for Apollo 11’s historic flight two months later.
The astronauts’ team of Apollo 10 included Tom Stafford, John Young and Eugene Cernan. The astronauts conversation is taped and stored during any space mission and Apollo 10 tapes recorded astronauts talking about strange sound, and whether to tell NASA about it or not. “It sounds like, you know, outer space-type music,” one of the astronauts says. “Shall we tell [NASA] about it?” an astronaut asks. “I don’t know,” another replies. “We ought to think about it.”
According to official records, these astronauts never discussed the noise with NASA or with the public. It is unclear if the astronauts ever heard the noise on subsequent passes on the far side of the moon or if other astronauts on subsequent missions heard the sound. John Young ultimately flew back to the moon and walked on it as the commander of Apollo 16. Eugene Cernan commanded the Apollo 17 mission and was the last man to walk on the moon. Tom Stafford flew in space again, but never travelled back to the moon.
The conversation about “outer space type sound” was recorded when Stafford, Young and Cernan were on the far side of the moon, out of radio communication with Earth in May 1969. According to records, the whistling sound lasted nearly the entire hour the astronauts were out of touch. Later, the recordings were sent back to Mission Control where they were transcribed, archived, and classified, per protocol.