In the vacuum of space, there's no way for sound to travel. But that doesn't mean space is silent. Spacecraft capture radio emissions that can be converted into sound we can hear. Indeed, NASA recently posted a fantastic collection of space audio on Soundcloud and it's wonderfully haunting:
Here are descriptions of some of the recordings:
• Juno Captures the 'Roar' of Jupiter: NASA's Juno spacecraft has crossed the boundary of Jupiter's immense magnetic field. Juno's Waves instrument recorded the encounter with the bow shock over the course of about two hours on June 24, 2016.
• Plasma Waves: Plasma waves, like the roaring ocean surf, create a rhythmic cacophony that — with the EMFISIS instrument aboard NASA’s Van Allen Probes — we can hear across space.
• Saturn's Radio Emissions: Saturn is a source of intense radio emissions, which were monitored by the Cassini spacecraft. The radio waves are closely related to the auroras near the poles of the planet. These auroras are similar to Earth's northern and southern lights. More of Saturn's eerie-sounding radio emissions.
• Sounds of Jupiter: Scientists sometimes translate radio signals into sound to better understand the signals. This approach is called "data sonification". On June 27, 1996, the Galileo spacecraft made the first flyby of Jupiter's largest moon, Ganymede, and this audio track represents data from Galileo's Plasma Wave Experiment instrument.
• Sounds of a Comet Encounter: During its Feb. 14, 2011, flyby of comet Tempel 1, an instrument on the protective shield on NASA's Stardust spacecraft was pelted by dust particles and small rocks, as can be heard in this audio track.
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