Introduction One can speak of the structure of the long term structure of the solar system. The whole
object of developing a theory for the way planetary systems form is that they meet the following criterion:
They predict the Titius-Bode rule for the distribution of the planets; the distribution gives the planetary
orbital periods from Newton’s Universal Law of Gravitation. The distribution of the planets is chiefly
predicted by three factors: The inward forces of gravity from the parent star, the outward pressure
gradient from the stellar production of radiation, and the outward inertial forces as a cloud collapses into a
flat disc around the central star. These forces separate the flat disc into rings, agglomerations of material,
each ring from which a different planet forms at its central distance from the star (they have widths). In a
theory of planetary formation from a primordial disc, it should predict the Titius-Bode rule for the
distribution of planets today, which was the distribution of the rings from which the planets formed.
Also, the Earth has been in the habitable zone since 4 billion years ago when it was at 0.9 AU. Today it is
at 1AU, and that habitable zone can continue to 1.2 AU. So we can speak of this distance to the Earth over
much time. The Earth and Sun formed about 4.6 billion years ago. As the Sun very slowly loses mass over
millions of years as it burns fuel doing fusion, the Earth slips microscopically further out in its orbit over
long periods of time. The Earth orbit increases by about 0.015 meters per year. The Sun only loses
0.00007% of its mass annually. The Earth is at 1AU=1.496E11m. We have 0.015m/1.496E11m/
AU=1.00267E-13AU. So,
The Earth will only move out one ten thousandth of an AU in a billion years. Anatomically modern
humans have only been around for about three hundred thousand years. Civilization began only about six
thousand years ago.
The unit of a second becomes important in my theory. We got the second from the rotation period of the
Earth at the time the moon came to perfectly eclipse the Sun. The Moon slows the Earth rotation and this
in turn expands the Moon’s orbit, so it is getting larger, the Earth loses energy to the Moon. The Earth day
gets longer by 0.0067 hours per million years, and the Moon’s orbit gets 3.78 cm larger per year.
That is as the Earth’s day gets longer and the lunar orbit grows larger, we got the second at the time that
the Earth day was what it is during the epoch when the Moon perfectly eclipses the Sun, 24 hours.
The near perfect eclipse is a mystery in the sense that it came to happen when anatomically modern
humans arrived on the scene, even before that, perhaps around Homo Erectus and the beginning of the
Stone Age. The Earth day was 18 hours long, long before that, 1.4 billion years ago. Homo Erectus is
around two to three million years ago.