"I would like to emphasize at this point that I greatly appreciate the work of the art team. I am aware that the developers always strive to present us with an appealing and unique universe. However, when one aspect of this otherwise great work contradicts everything i've ever learned in school and isn't even theoretically possible, I experience great discomfort. It spoils my enjoyment of the game because this skybox is ever-present and doesn't just appear like a bug here and there." "Therefore, I have decided to create a small scientific contribution explaining why it is impossible for an entire solar system to exist within a visible nebula. I hope this will help the art team adjust the skybox in a way that is both visually appealing and also authentic." Why It Is Impossible for a Developed Solar System to Lie Within a Nebula Visible to the Naked Eye. To address whether a fully developed solar system can lie within a nebula that is visible to the naked eye, we need to examine the structure and evolution of solar systems and nebulae, as well as the physical properties of gas and dust clouds in space. 1. Formation and Evolution of a Solar System Solar systems are born in dense molecular clouds, often referred to as star-forming regions. These clouds consist of gas and dust and provide the necessary material for the formation of stars and planets. During the early phases of star formation, nebulae are often visible, as they are illuminated by nearby stars. Once a star like the Sun is formed, it starts to significantly alter its surroundings. The intense radiation from the young star and the stellar wind—a continuous stream of charged particles from the star’s surface—begin to "clean out" the surrounding gas and dust. This results in the gradual dispersal of the dense cloud from which the star and its system originally formed. Example: The Solar System Our own solar system went through this process around 4.6 billion years ago. During its formation, it was embedded in a dense gas and dust cloud, which was gradually dispersed by the Sun’s radiation and stellar wind, as well as by the formation of planets. Today, there is no dense gas or dust cloud in the immediate vicinity of our solar system that could manifest as a visible nebula. 2. Physical Conditions of a Nebula Nebulae generally consist of gas (mainly hydrogen) and dust. There are various types of nebulae, each varying significantly in density and visibility. The main categories include: Emission Nebulae: These glow due to ionized radiation from a nearby star. A well-known example is the Orion Nebula, which is visible due to a hot young star at its center. Reflection Nebulae: These shine by reflecting light from nearby stars. Dark Nebulae: These appear as dark patches that block light from background stars. For a nebula to be visible, it must reach a certain density and size. However, this visibility is primarily caused by external illumination from hot young stars. Inside a developed solar system, which has already cleared out much of its surrounding material over time, there would typically be no dense nebula. 3. Why Developed Solar Systems Don’t Contain Nebulae A "finished" or developed solar system, such as ours, has already used up or cleared out most of the dust and gas around it over time. Several mechanisms ensure that a developed solar system would no longer have dense nebulae around it: Stellar Wind: Stars like the Sun blow away the remaining gas and dust in their surroundings through their radiation pressure, removing the dense clouds typical of star formation regions. Planetary Formation and Accretion: During the formation of planets, much of the available dust and gas is either incorporated into planets or accreted by the star itself. This greatly reduces the material that could form a visible nebula. Dynamic Processes: The movement of planets and gravitational forces in a developed solar system further ensure that leftover gas and dust are either ejected or dispersed over time. 4. Visible Nebulae: Distances and Sizes The nebulae we see from Earth, such as the Orion Nebula or the Eagle Nebula, are often thousands of light-years away and span vast regions of space. These nebulae contain gas and dust dispersed over many light-years. While they are visible from Earth, that does not mean that dense gas clouds would be visible if you were close to or inside them. Even if a planet or star were located inside such a nebula, the density of the material is so low that the nebula would not be visible to the naked eye from within. Space is extremely sparse, and the scattering of light that makes nebulae visible occurs only over large distances under specific lighting conditions. 5. Conclusion It is practically impossible for a fully developed solar system to lie within a nebula that is visible to the naked eye from within. The processes that lead to the formation of a solar system—including the "clearing out" of material by stellar winds, planetary formation, and dynamic interactions—effectively remove the gas and dust that would be necessary for a visible nebula. Visible nebulae are primarily found in star-forming regions, not in areas with fully developed stars and planets. Only in rare, extreme cases—such as supernova remnants or very dense, young star-forming regions—might one possibly perceive a diffuse glowing nebula, but this would not be typical for a developed solar system. "Smaller, local nebulae, such as those found at the Lagrange points ingame, are also not possible. However, in the interest of variety and the effort to give each solar system its own touch and flair, I support the design of these lokal nebulae in the game." 6. What would be a more realistic representation? Scientifically speaking, one could integrate smaller, aesthetically interesting structures into the skybox, such as dust disks near young stars or delicate gas filaments that wander through space as remnants of a past supernova. Such structures would be realistic and could support the game's visual appeal without contradicting the laws of physics. I hope this will help you to understand. Keep up your work.