A sonification video of the Andromeda galaxy, released by NASA's Chandra X-ray Observatory. The video shows stacked images of Andromeda taken in different light wavelengths (radio, infrared, optical, ultraviolet and X-ray). Researchers then converted those images to sound by assigning a separate range of notes to each of these wavelengths. In the video, a line passes across the lights, playing each assigned note like keys on a piano. Credit: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)