Data sonification translates information collected by various NASA missions — such as the Chandra X-ray Observatory, Hubble Space Telescope, and Spitzer Space Telescope — into sounds.

This is the deepest image ever taken in X-rays, representing over seven million seconds of Chandra observing time. For that reason, and because the observed field is in the southern hemisphere, astronomers call this region the "Chandra Deep Field South". At first glance, this image may appear to be a view of stars. Rather, almost all these different colored dots are black holes or galaxies. Most of the former are supermassive black holes that reside at the centers of galaxies. In this data sonification, the colors dictate the tones as the bar moves from the bottom of the image to the top. More specifically, colors toward the red end of the rainbow are heard as low tones while colors towards purple are assigned to higher ones. Light that appears bright white in the image is heard as white noise. The wide range of musical frequencies represents the full range of X-ray frequencies collected by Chandra of this region. In the visual color image, this large frequency range in X-rays had to be compressed to be shown as red, green, and blue for low, medium, and high-energy X-rays. Played as sound, however, the full range of data can be experienced. As the piece scans upward, the stereo position of the sounds can help distinguish the position of the sources from left to right.

Sonification Credit: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)

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