Tim Barnes

Moons As Seen Through Telescope
The Galilean moons seen through a telescope - Image from astronomyonline.org

The Galilean moons are the four main moons orbiting Jupiter.
Io, Europa, Ganymede and Callisto were discovered by Galileo Galilei in January 1610.
The Jovian Moons Applet mathematically calculates the current positions of these moons.

The next diagram shows the arrangement of the Galilean moons in their orbit, (Both laterally and a top-down view), as they were at 13:01 on the 16th July 2013. The user of this utility can also predict and plot past and future arrangements.

Jupiter's Moons

Arrangement of Galilean moons at 13:01 16/07/2013 - Image from Jovian Moons Applet

The diagram below roughly Illustrates the sound sculpture Installation showing two of the four mobile sculptures of various sizes.
Each sculpture is a tunable, battery-powered radio with a large hand-made antenna, capable of receiving a multitude of different signals.
Each of the Galilean moons is represented by one of these radio sculptures.

The Listener

The Sound Installation - Initial Plan July 2013

I believe the most prominent sound will be radio static with various signals caught as the radios are tuned on a cycle following the movements of the Galilean moons.
The following diagram shows the very simple method of tuning the radios in relation to the position of the sculpture's corresponding moon. This arrangement is based on the data collected on July 16th 2013 at 13:01.

Orbit to Tuning

Tuning the Radio Sculptures - 13:01 16/07/2013

The radios can be tuned altering the sound-scape on a daily basis.
This could also be an interactive / social installation – visitors could either follow their own, alternate chance operation or just tune the radios to their liking.

Possible Research Route - The Harmony of the Spheres

                              'Mystical dance, which yonder starry sphere
                              Of planets and of fixed in all her wheels
                              Resembles nearest; mazes intricate,
                              Eccentric, intervolved, yet regular
                              Then most when most irregular they seem,
                              And in their motions harmony divine
                              So smooths her charming tones that God's own ear
                              listens delighted'.

                                                             - John Milton, Paradise Lost