The Juno Waves instruments detect electric and magnetic components of plasma waves and radio waves that range through frequencies that include those audible to humans. Although these differ from the pressure waves that we normally think of as sound, they can be used to drive speakers and produce sounds we can hear.
Contact: William Kurth.
Featured Juno Audio
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Musical Tones from Juno Waves Perijove 4
NASA's Juno spacecraft has observed plasma wave signals from Jupiter's ionosphere. This display is a frequency-time spectrogram. The results in this figure show an increasing plasma density as Juno descended into Jupiter's ionosphere during its close pass by Jupiter on February 2, 2017. The intensity, or amplitude, of the waves is displayed based on the color scale shown on the right. The actual observed frequencies of these emissions approach 150 kHz, which is above the human hearing range. To bring these signals into the human audio range, the playback speed has been slowed by a factor of about 60. The momentary, nearly pure tones follow a scale related to the electron density, and are likely associated with an interaction between the Juno spacecraft and the charged particles in Jupiter's ionosphere. The exact source of these discrete tones is currently being investigated. Credit: NASA/JPL-Caltech/SwRI/Univ. of Iowa
The video presents a frequency-time spectrogram with a moving cursor that shows the time position of the audio track. Time advances from left to right along the horizontal axis, frequency ranges from low to high frequencies along the vertical axes, and the amplitude of the signals is color coded with blue indicating weak signals and red indicating strong signals.
Past Featured Audio Clips
- Musical Tones from Juno Waves Perijove 4
- Juno Listens to Jupiter's Auroras
- Juno Records Jupiter's Bow Shock
- Juno Crosses Jupiter's Magnetopause