Do planets really orbit?

Abstract This study demonstrates that planetary motion, traditionally described as orbital revolution, is more fundamentally expressed as straight-line reciprocal phase oscillation. By normalizing JPL orbital data with Complex Oscillator Dynamics (COD) through least-squares minimization and RMSE analysis, planetary trajectories reduce to identical waveforms, revealing a universal resonance with the essential cosmic wave.This principle extends beyond the solar system: galaxies emerge as geometric envelopes of stars’ short-distance phase oscillations, not as rotating disks. Thus, astronomical motion at all scales reflects the same gauge-symmetric energy balance and minimal action.The universality of phase motion links planetary oscillations, galactic structure, and quantum entanglement, suggesting that the cosmos is a single complex energy field governed by intrinsic resonance.A new physics begins.This paper is a supplementary paper. The main paper was published on a separate website and is posted along with the verification simulation program. :https://udynamics.net/en/assets/cods/A_Theory_Of_Cosmology_based_on_CODS_2025.htmlYouTube video:https://youtu.be/rHp47te-uqc?si=Bf9DY57effxyk1K1