Glass is a planet that formed during the early days of the system's life. It rests in a stable orbit around a yellow star as the fifth of six planets, the middle of the three gas giants, and the largest planet in the system. A dense metal core is surrounded by 50000 kilometers of various gaseous elements it's captured over the ages. The elements are, somehow, sorted into very clear strata based on their density. Hydrogen and Helium largely make up the thin upper atmosphere, followed by an Oxygen-majority layer, then the Methane layer. These layers form the "Outer Planet", and are full of materials captured by
Glass' gravity well and settled there. Over time these materials smashed together to form single "continents" for each layer. While the majority of solid materials are light enough to drift along their plane, there are small numbers of heavier elements sprinkled throughout them. The Outer Planet experiences 25-hour days and 600-day years, and thanks to it's tilted axis, experiences a variety of relatively temperate seasons.
Beneath the Outer Planet is the Water Membrane. A dense layer of steam acts as a barrier that denser elements smash into, usually to no avail. This results in "floating" deposits of denser and rarer materials along this membrane layer. The Water Membrane divides the Outer Planet from the "Inner Planet".
The Inner Planet is full of denser gases, with the larger notable layers being the Chlorine and Neon layers, and beneath them are the heavier metal-based gas layers that surround the solid core. While a number of objects have pierced the Water Membrane over the ages (though none are undamaged), they are unable to form larger continents as seen in the Outer Planet thanks to incredibly savage ionic storms that devastate the Inner Planet. These intense plasma storms are a frequent if not everpresent occurrence in the Inner Planet, leaving the largest solid chunks of floating matter with a couple kilometers of area at most.
On the unusual occasion where an object penetrates the Water Membrane, a violent reaction between the Inner and Outer layers occurs, often with explosive force, and creating a massive disturbance in the atmosphere. Ionic storms can "leak out" of the ruptured membrane before the breach is collapsed, and while devastating, are short-lived after being cut off from the Inner Planet. The turbulence and storms can wildly alter the Outer Planet's floating geography during these small windows of instability. The Inner Planet experiences one season, and one time of day, at all times: ionic storms.
Glass was able to exist in a state of undisturbed peace for an extended period, quietly orbiting it's star, until one day...
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Your planet is about to undergo a dramatic event that will forever leave it's mark.
What event occurs? It can be something celestial in origin or result, such as our own moon theory of the asteroid collision, or something "terrestrial" (gaseous?), like a cataclysmic eruption. If an idea is, ah, too
creative, I will let you all know.
A gas giant with a 50000km radius, the fifth of six planets and the largest in the system, with neatly divided gas layers. The Outer Planet is made up of Hydrogen, Helium, Oxygen, and Methane layers that experience relatively temperate seasons, followed by a dense steam Water Membrane that separates it from the Inner Planet's extremely turbulent Chlorine, Neon, and metal gas layers. The Inner Planet suffers from intense plasma storms, and they can occasionally "leak" if the Water Membrane is penetrated by a powerful-enough impact. The impacts result in violent reactions that disrupt the Outer Planet's atmosphere. The Inner Planet only knows Ionic Storms. Both the Inner and Outer Planet contain captured materials floating in massive "continents" in each layer of the Outer Planet, or kilometers-wide parcels in the Inner Planet. The planet experiences 25-hour days and 600-day years.