Astrophysics

2610 Submissions

[2] viXra:2610.0047 [pdf] submitted on 2026-10-12 16:09:41

Theoretical Derivation of the Spiral Galaxy Rotation Curves Obtained by Vera Rubin, Without Dark Matter

Authors: Antonio Jose Mejias Marquina
Comments: 3 Pages.

In this work, it is demonstrated that dark matter does not exist. Through a strictly analytical derivation based on clas-sical mechanics and the geometry of spiral galaxies, a formula is obtained that precisely reproduces the rotation curves observed by Vera Rubin. The results show that the flat behavior of stellar velocities in outer regions does not require invisible mass halos, but arises naturally from the proper application of fundamental gravitational laws to extended mass systems.
Category: Astrophysics

[1] viXra:2610.0032 [pdf] submitted on 2026-10-09 00:09:39

The 1.11 Million Year Cycle in the Outer Solar System

Authors: Ray Tomes
Comments: 4 Pages. (Note by viXra Admin: Please submit article written with AI assistance to ai.viXra.org)

A companion paper establishes, from the standard 0—30 Ma geomagnetic polarity timescale, a clear periodicity in Earth's prevailing magnetic polarity near 1.1101 million years. This paper sets that figure aside and asks an independent question: does a period of similar length appear anywhere in the dynamics of the solar system itself, arrived at without any reference to Earth's magnetic field? Two such periods are identified, from two distinct physical mechanisms. The Uranus—Neptune orbital energy exchange, established via numerical integration of the outer planets (the LONGSTOP project), gives 1.119 Myr — a drifting, near-resonant beat. The Jupiter—Uranus perihelion anti-alignment, a stable secular frequency difference computable directly from measured planetary precession rates, gives 1.107 Myr — a fixed period. Both sit within a fraction of a percent of the geomagnetic figure. The paper also records the recovery, after a decades-long search, of the original source for a long-held personal note of "1.108 Myr" for this cycle. The explanation for why these independent timescales agree so closely is left for a future paper.
Category: Astrophysics