Select Page

The Music of the Spheres is an ancient concept that has captured humanity’s most brilliant minds for thousands of years – and it still does. Especially now that NASA has recordings of the sounds of the planets in our solar system.

The main principle behind the concept is that the movements of the sun, planets, moon etc. create a harmonic and mathematical order. Not something that could be heard, but which they believed had direct relationship to the mathematical relationships between the most harmonious audible sounds. Particularly what musicians call the intervals of the octave, the fifth and the fourth.

The Harmonic Series is a series of sounds or frequencies that occur when you divide a string (a guitar string, for example) into equal parts.

monochordThe Greek philosopher, Pythagorus, developed the mathematics of the series around 600 BCE. He created what was called a mono-chord, a wooden box, upon which he put one string. It is believed that the string was secured on one end, and a weight was tied on the other end, which was carried over a rounded bar.

By adjusting the weight, the tension and the pitch of the string could be adjusted.

In the middle was a moveable bridge. He used this to determine the mathematical relationships of sound.

sample waveforms

Pythagorus found that the most harmonious sounds had whole number relationships. That is 2:1, 3:2 and so on.

The following information comes from course material for a mathematics course at Dartmouth University at:

http://www.dartmouth.edu/~matc/math5.geometry/unit3/unit3.html

“Quoting Aristotle again… “[the Pythagoreans] saw that the … ratios of musical scales were expressible in numbers [and that] .. all things seemed to be modeled on numbers, and numbers seemed to be the first things in the whole of nature, they supposed the elements of number to be the elements of all things, and the whole heaven to be a musical scale and a number.”

It seemed clear to the Pythagoreans that the distances between the planets would have the same ratios as produced harmonious sounds in a plucked string. To them, the solar system consisted of ten spheres revolving in circles about a central fire, each sphere giving off a sound the way a projectile makes a sound as it swished through the air; the closer spheres gave lower tones while the farther moved faster and gave higher pitched sounds. All combined into a beautiful harmony, the music of the spheres.

This idea was picked up by Plato, who in his Republic says of the cosmos; “. . . Upon each of its circles stood a siren who was carried round with its movements, uttering the concords of a single scale,” and who, in his Timaeus, describes the circles of heaven subdivided according to the musical ratios.

Kepler, 20 centuries later, wrote in his Harmonice Munde (1619) says that he wishes “to erect the magnificent edifice of the harmonic system of the musical scale . . . as God, the Creator Himself, has expressed it in harmonizing the heavenly motions.”

And later, “I grant you that no sounds are given forth, but I affirm . . . that the movements of the planets are modulated according to harmonic proportions.””

Johannes Kepler, a key figure in the scientific revolution of the 1600s, calculated the frequencies of the orbits of the planets. More information about his work is available at:

http://www.keplerstern.com/Music_of_spheres/music_of_spheres.html

In our times, NASA has continued the curiosity and discussion about the Music of the Spheres with actual frequencies of the planets picked up by Voyageur spacecrafts.

These frequencies are actually radio waves that are reduced in frequency to the audible range so we can hear them.

Check out the video below to listen to the sounds of the planets. Very interesting listening.

[youtube CcTQuVXXbqE]