Genesis

The Sol System began in the writhing heat of a dying star, a primordial star forge known as Coatlicue. Here, billions of years ago, our sun formed along countless other proto-stars. The death throes of the star Coatlicue drummed through the local nebula, mixing its material with interstellar medium in violent swirls. In this prenatal enviroment, rich in gas, ice, and rock, the sun and its siblings surged in size.
The successful proto-stars coiled cosmic material around themselves, and split off from the forge. Having claimed their spoils, they set out on their own orbit through the galaxy.

Formation of the Planets

As the proto-sun feasted, materials collided and broke apart. At the snow line, where water was cold enough to form snow or ice, headwind became tailwind. In this snowy realm, the seeds of something else grew. Planetesimals, proto-planets, moons and asteroids, formed in the wake of the sun.
Some of these seeds hoped to rival the sun in its brilliance. Made from the same stellar materials as the sun, proto-Jupiter was still too late and too small to become a star. Had the giant perhaps been older, or fifteen times as big, the Sol System may have had two binary suns instead.
The formation of Jupiter facilitated the creation of the next planets. Balancing out the hungry grasp of the sun, Jupiter made room for Saturn to form, and then Uranus and Neptune.
The inner world took longer to shape. These planetesimals also formed in the snow realm, before migrating closer to the sun. Among many rivals, the burgeoning planets were drawn towards eachother, fighting for their survival. The moon, Luna, was likely once a potential planet of its own before its collision with Tellus. The planetesimals who did not mix into the fateful four were perhaps even unluckier, meeting their doom in the solar furnace, or by being flung out into the lightless void.

Stabilization

As the protoplanetary disk became a system, it took even longer for it to become the system we known today. The orbits of the planets had to stabilize, and the remaining material had to cleared through. The resonance of Jupiters and Saturns orbit, the dance of the giants, pushed Uranus and Neptune out towards the edge of the Solar System.
The remnants of the protoplanetary material was forced as far out as possible, forming the Oort Cloud. There it festered. Perhaps wary of what lay beyond, Neptune, exerted her own influence over the outermost reaches of the system, formed the Kuiper Belt.

Primordial Cosmic Chaos

^{several billion years ago} -— Our sun forms as a protostar in the star forge

Protoplanetary Disk

^{? ?00 000 years later} -— Jupiter, the first planet, forms

^{? 000 000 years later} -— Saturn forms, sped up by the influence of Jupiter

^{? ?00 000 years later} -— Uranus and Neptune form before the stellar winds push away the last of the gas

^{?? 000 000 years later} -— The inner planets form as planetesimals, and outcompete the other burgeoning planets.

Planetary Migration

^{50 000 000 years later} -—Sun enters its main sequence, becoming a yellow dwarf star

^{??? 000 000 years later} -—The orbital resonance between Saturn and Jupiter pushes Uranus and Neptune out towards the Kuiper Belt

^{?? 000 000 years later} -— Tellus is impacted by Theia. The remaining material forms its moon, Luna

^{?? 000 000 years later} -— A small planet collides with Uranus, causing it to spin sideways

Reckoning

The foundational myths of the Olympic faith are clear. The first of the planetary deities was Ouranus (Uranus), who was overthrown by his son, Cronos (Saturn), who was himself later overthrown by Jove (Jupiter). Now, with a better understanding of the origins of the Sol system, we know that Jupiter was first of the planets.
The faith has attempted to reconcile their myths and history, drawing a parallel between the victory of Ouranus over the primordial chaos with the creation of the sun, and seeing the shape of ringed Saturn in the fertile crescent of protoplantary material that would come to be the system. Other theologists believe the myth instead represents events during early prehistory or antiquity.

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See Also

History | Genesis · Prehistory · Antiquity · Imperial · Modern · Now

Early Spacefaring · Late Spacefaring