What modulates our Sun? The majority of science work on the principle that the Sun is self modulating and each solar cycle is a product of a random number generator. There are others that suspect the Sun is modulated by the planets with a special emphasis on Uranus & Neptune. Thanks to Carl Smith who has recently left us we have new knowledge that significantly adds to Jose, Landscheidt & Charvàtovà's work.

Geoff Sharp

New Solar Physics 101 (2008)

This article is an "elevator" or simplified version of AMP theory.

FORWARD: The Sun orbits the SSB (Solar System Barycentre) roughly every 10 years.

There are 2 orbits consisting of an outer orbit that takes the Sun away from the SSB (outer loop) and a smaller orbit that returns the Sun to near the SSB (inner loop).

The 2 orbits are controlled (99.96%) by the 4 outer planets.


Outer loop orbits that reach the greatest distance from the SSB coincide with the largest solar cycles (sunspot count) along with inner loop orbits that come closest to the SSB.


Occasionally (not randomly) the inner loop orbit can become distorted or disordered and attempt to be a quasi outer loop orbit. When the first half of this quasi orbit exceeds the distance of 1 solar radius from the SSB the associated solar cycle and the one following are highly reduced (Solar Grand Minimum).


Rule 2 overrides Rule 1. (applies only to the second cycle in a Solar Grand Minimum)


Solar cycle timing is NOT connected to outer or inner loops.


Outer loop orbits that travel the greatest  distance from the SSB and inner loop orbits that come closest to the SSB are 100% controlled by Uranus and Neptune. These events can only occur when U/N are together.

Disordered inner loops orbits occur when J/U/N are together with S roughly opposing (U/N can be within approx 60 deg of their 360 deg conjunction).

The 4 outer planets repeat their positions in relation to each other every 4627 years. A trace of the solar path of the Sun about the SSB is slightly different each orbit (outer and inner) over 4627 years. Disordered inner loop orbits vary in shape and those that have the first half of the orbit furthermost from the SSB coincide with the deepest solar downturns. The stronger disordered orbits can cluster together and these events occur twice in the 4627 year cycle. These clusters appear as Little Ice Age type events across the Holocene.

The New Solar Physics 101 theory is completely falsifiable. There are rare occasions across the Holocene where a strongly disordered inner loop orbit does not coincide with a Solar Grand Minimum (2 solar cycles less than 50 SSN on the Wolf scale), but there are no deep Grand Minima that are not associated with strongly disordered inner loop orbits. It was seen in 1830 that the timing of a disordered inner loop orbit can occur near solar cycle max which negates a larger proportion of the reduction effect.

I invite the scientific community to provide evidence to falsify the "The New Solar Physics 101" theory.

Geoff Sharp 2017.


Solar path generation tool.

JPL ephemeris DE430.

Are Uranus & Neptune Responsible for Solar Grand Minima and Solar Cycle Modulation? and

Powerpoint presentation (summary)


solar powerwave



Many thanks go to Carl's brother Dave for providing the Domain, Server and Software.