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Juno captures eerie 'voice' of Jupiter's auroras

Having made its first laps around the gas giant with instruments on, NASA's spacecraft sends back one of the planet's creepy soundtracks.

NASA's Juno spacecraft has sent back data from a trip over both Jupiter's poles that reveals a world even more chaotic than previously known, and with impressive auroras making ghostly "cries" into space.

Juno's Radio/Plasma Wave Experiment, dubbed Waves, recorded the radio emissions that come from the same energetic particles that create the huge auroras circling the gas giant's north pole, and you can hear how they sound in the embedded video above.

NASA says scientists have known about the emissions for decades, but Juno provides a unique opportunity to analyze them up close -- kind of like putting an ear to a closed bedroom door when previously we've been too far away to even get inside the house.

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"Jupiter is talking to us in a way only gas-giant worlds can," Bill Kurth, co-investigator for the Waves instrument from the University of Iowa, said in a release from NASA. "These emissions are the strongest in the solar system. Now we are going to try to figure out where the electrons come from that are generating them."

Juno previously sent back the odd sounds of entering Jupiter's magnetosphere. It will now make dozens more orbits around the huge planet to study it more closely.

Its first trip around the planet with its instruments turned on also revealed the poles are marked by myriad storms of various shapes, sizes and rotation patterns. It's as if the top and bottom of Jupiter are constantly plagued by the worst hurricane season imaginable.

The chaotic polar picture is different from what scientists have observed at Jupiter's neighbor Saturn, where a huge but well-organized and fixed polar storm is resident at the ringed planet's north pole.