During a flyby of Venus, the Parker Solar Probe detected a natural radio signal as it flew through the planet’s upper atmosphere. This was the first direct measurement of the planet’s ionosphere in nearly 30 years, and the difference between this recent data and earlier measurements suggest that Venus’ upper atmosphere undergoes changes during the 11-year solar cycle.

The data sonification in the video is derived from data taken by the Parker Solar Probe’s FIELDS instrument.

Video Credit: NASA