CosmoHarmonics

Planetary motion as harmonic timestamps

Abstract

CosmoHarmonics uses NASA JPL ephemeris data to derive musical frequencies from the orbital velocities of Mercury, Venus, Earth, and Mars. At any moment, these four planets form a unique four-note chord: a harmonic timestamp that can be used in composition and improvisation. This continues the cosmic music tradition from Pythagoras through Kepler to Coltrane.

The Tradition

Pythagoras proposed that celestial bodies emit tones based on their orbital ratios: the “Harmony of the Spheres.”

Kepler in Harmonices Mundi (1619) assigned musical intervals to planetary orbits based on their angular velocities.

Coltrane explored cosmic and spiritual dimensions of harmony, recording Stellar Regions and Interstellar Space.

CosmoHarmonics continues this tradition with real data: NASA's JPL Horizons provides precise planetary positions and velocities, which we translate into actual musical frequencies available in real-time.

The Core Concept

Instead of asking “What time is it?”

“What chord is it?”

At any moment, the four inner planets have specific orbital velocities. We map these velocities to musical frequencies:

Mercury

Fastest → Highest

Venus

Second voice

Earth

Third voice

Mars

Slowest → Lowest

Together, these form a four-note chord that changes continuously as the planets orbit. Each moment has a unique harmonic signature.

Harmonic Timestamps

Because planetary orbits never exactly repeat, every chord is unique:

“The chord you hear has never existed before in human history, and will never exist again in exactly the same way.”

These harmonic timestamps can be:

•
Queried in real-time: “What chord is it right now?”
•
Sampled across time: Generate chord progressions from date sequences
•
Used in composition: Build scores from cosmic harmonic material
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Used in improvisation: Play with real-time cosmic harmony

Public Demo

Chord Time

“What chord is it right now?” The core question, answered. A live taste of the orbital composition work, on the research page.

Sequencing, journey, and arrangement tools are in development.

Access

The system runs live in the Chord Time demo at the top of the research page. An API for programmatic access is in development.