Have you been reading anything on the hypothesis that the sun is really a comet dashing through space dragging the planets along?
It helps explain some eccentricities in planetary orbits.
Eta: As our solar systems magnetic field interacts with other ones, the forces push and pull, altering orbits and slowing planetary orbital speed. Ie, the year is getting longer.
This post was edited on 11/25 at 9:30 am