John_Townley wrote: ... On this planetary scale, what mechanisms, set of forces, or other agents connect and keep events at the macro scale in synch with those at the meso or micro scales ...
In my fourth book,
Astrology: A Language of Life; Volume IV - Relationship Analysis http://www.earthwalkastrology.com/volIVtoc.htm, I introduced a radical new relationship analysis technique called "Genetic Synastry".
A physical basis for the macrocosmic astrological equivalent to the microcosmic Double Helix and DNA was put forward.
For the microcosm, we see:

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And for the macrocosm, we observe:

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And side by side, we see the relationship between the macrocosm and the microcosm:

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I wrote in
Volume IV:"On 2 April 1953, with Mercury stationary direct in Pisces at the finger of a Yod, and a Saturn-Neptune conjunction in Libra sextile to Pluto in Leo as its base, two scientists, James Watson & Francis Crick, working at Cambridge University in the UK, published a paper, "Molecular Structure of Nucleic Acids." They proposed a radical structure for Deoxyribose Nucleic Acid (DNA), which consisted of two helical chains, each coiled round the same axis. Perpendicular to this central axis, in Watson and Crick's theoretical model, were strands of nitrogenous bases. Two of the chemical bases, Adenine and Thymine, only bonded with one another; two others, Guanine and Cytosine, similarly bonded exclusively with each other.
Also that year, Uranus and Neptune approached the 270˚ waning square of their 172-year cycle. This radical breakthrough in understanding of the human chemical architecture was brought into visible form by the Saturn-Neptune conjunction, and the ability of Watson and Crick to think outside the box was a gift of Uranus.
By the Uranus-Neptune conjunction in February 1993, a Human Genome project was underway to map a complete set of human chromosomes, comprised of about 30,000 genes made up of three billion chemical nucleotides labeled C, G, A or T. Is there also an astrological equivalent to this chemical design of a human being?
Yes, and it is my belief that an astrological counterpart to DNA can be found in Antiscia and Contrascia degrees. Genetic characteristics transmitted from parents to their children may possibly be traced to the synastry conjunctions between one parent's natal planet, and a planet in its Antiscion in the second parent's nativity. Can astrology illustrate the metaphysical underpinnings of this conceptual model for the Double Helix? Is this model limited to genetics, or can karma be seen, too?
I have contemplated the theoretical underpinnings of an astrological equivalent to the Double Helix. A hologram exactly replicating the atomic structure of DNA should therefore exist on the macrocosmic level. I believe that this pattern can be perceived in a figure-eight curve forming around the central axis of an Analemma, which is a plotting of the Sun's position in the sky at regular daily intervals. This geometric figure produces an equation of time, as well as tracking the annual solar declination from Winter Solstice to Summer Solstice, and then back again.
Watson and Crick's 1953 theory about DNA structure expounds that each helical chain ran in opposite directions. For astrologers, it is a simple perceptual leap to visualize how the annual journey of the Sun traces a pattern identical to the structure of DNA. A link between macrocosm and microcosm is found in ascending and descending declination of the Sun. Each degree of the Zodiac from Winter Solstice to Summer Solstice represents the helical chain in its ascending journey, while each degree from Summer to Winter Solstice is the helical chain in its descending journey. Solstice Points, or Antiscia, are identical to the perpendicular strands of nitrogenous bases bonding in exclusive pairs. It is my belief that this solar declinational model is the macrocosm to DNA's Double Helix microcosm.
The image shown above is an Analemma as displayed on a Cram's Imperial World Globe. Earth's equator is seen to intersect the figure-eight curve at the Equinoxes, and the top reach of the figure-eight depicts the Summer Solstice at the Tropic of Cancer, while its lowest point is the Winter Solstice at the Tropic of Capricorn (23˚ S 27'). The ecliptic, or the apparent path of the Sun, is seen to intersect the equator at the International Date Line in the Pacific Ocean; this being the Autumnal Equinox.
Just as the Double Helix has four nitrogenous bases bonding in two exclusive pairs, C—G and A—T, it would be only logical if the mirrored pairs of Equinox Point degrees comprised one exclusive bonding, while the mirrored Solstice Point degrees made up the second set of bonded pairs.
This theoretical model for astrology opens a vast window for research into what I call Genetic Synastry. I invite the astrological community to go forward with this research. The technique I recommend consists of exact conjunctions from the natal planet of one parent to a planet in the second parent's nativity occupying the former's antiscion or contrascion degree. The gist is that planetary connections in synastry from one Zodiac degree to its antiscion or contrascion degree show the genetic framework between the mother and father being transferred to their child."