Hey, how awesome is this? As the satellite Juno passed Jupiter, it came near the moon Ganymede. As it did, it recorded this audio, which does sound like an a̳l̳i̳e̳n̳ transmission sent from the moon into space. I tried to slow it down 10X but still not much changed, so I slowed it down 20X and it certainly sounded more musical, but no voices. So if this is an a̳l̳i̳e̳n̳ transmission, its probably pure data. Below is the original audio at normal speed.
NASA States: This 50-second video provides an auditory as well as visual glimpse at data collected by Juno’s Waves instrument as the spacecraft flew past the Jovian moon Ganymede on June 7, 2021. The abrupt change to higher frequencies around the midpoint of the recording represents the spacecraft\’s move from one region of Ganymede\’s magnetosphere to another. The audio track is made by shifting the frequency of those emissions — which range from 10 to 50 kHz — into the lower audio range The animation is shorter than the duration of Juno\’s flyby because the Waves data is edited onboard to reduce telemetry requirements.