There is another simple way to cause the same observable, a precessing
equinox, without requiring the Earth's axis or the tropical year to
change, that is: if the Sun is curving through space. In this model,
precession of the equinox stilloccurs, but it does not require significant
local forces because it is simply the geometric effect of a star system
that curves through space, gently changing the oreientation of the
Earth relative to the distant stars.
Pretend the dotted line that looks away from the Sun is an observer
looking out toward the constellations. Notice the observer now has
a changing orientation to distant space, and over time at each vernal
equinox, his gaze can precess through the constellations without any
excessive torqueing of the Earth required. (The only local force required
is enough to hold the Earth's axis in place relative to the Sun, as
the whole solar system moves through space.)
Zoom in to see the “incremental change” in orientation
to inertial space now attributed solely to lunisolar induced axial
wobble. One year of this change is equivalent to the annual rate of
precession. See how the accumulated change results in “apparent
wobble” with the earth axis tracing a 360 degree circle in the
sky.
Notice the Earth does make a 360 degree motion “relative to
the Sun” but this is not a 360 motion relative to inertial space.
The reason is simple, as the Sun curves it causes the observer on
Earth (attached to the Sun by gravity) to slowly turn to see a different
point in space each year. This is the same “observable”
attributed to an Earth "wobbled" by lunisolar forces.
As we will show, the Sun curving through space in a binary orbit solves
many more problems than just precession mechanics.
