This sonification was created by scientists to provide an auditory way of experiencing these images. While this isn’t the sound “of” space, sonifications represent data in the image to highlight certain scientific aspects through sound.
In this sonification, brightness controls volume & pitch, which means that the brightest sources in the image are the loudest & highest frequencies.
The X-rays from Chandra sound like a synthesizer, Spitzer’s infrared data are strings, and light from Hubble has bell-like tones.