![]() Nebulae closer to the center will have a lower Average Star Temperature compared with nebulae at the outer edges of the galaxy. The Average Star Temperature of a Galaxy Nebula in a spiral galaxy depends on the nebula's distance from the black hole at the center of the galaxy and will change as the nebula orbits closer to and farther from the center. The Star Fraction will represent the remaining mass in the nebulae that is not in the gas, i.e., the Star Fraction is 100% minus the Gas Fraction. Nebulae closer to the center will have higher Gas Fractions than nebulae at the outer edges of the galaxy. The Gas Fraction of a nebula depends on its distance from the black hole at the center of the galaxy, and will change as the nebula orbits closer to and farther from the center. Nebulae in elliptical galaxies are given a Dust Fraction of 0%. The Average Star Temperature of a Galaxy Nebula in an elliptical galaxy is set to 3500 K. Nebulae in irregular galaxies are given a Dust Fraction of 0%, a Gas Fraction of 60%, and a Star Fraction of 40%. The Average Star Temperature of a Galaxy Nebula in an irregular galaxy is randomly chosen from the range of 3500-36500 K. Lower Average Star Temperatures indicate older, cooler, less massive stars, and make the nebula more red or yellow. Higher Average Star Temperatures indicate younger, hotter, more massive stars, and make the nebula more blue. The color of a Galaxy Nebula is based on the Average Star Temperature property, just as the color of Star objects is based on their Effective Temperature. The simulated gas emits light while the simulated dust blocks light. The gas content in a Galaxy Nebula represents the interstellar gas that forms stars, while the dust content represents the interstellar dust. Gas and dust are more diffuse, or spread out, in a nebula. Stars in a Galaxy Nebula object are represented by small points of colored light. The properties of a Galaxy Nebula object listed above affect the nebula's appearance. ![]() The Density of a nebula affects its brightness: denser nebulae, which represent more stars and gas within the same volume, will appear brighter. The Average Star Temperature property of a nebula controls the color of the nebula.All three of these locked properties are percentages, which always add up to 100%. The relative amounts of gas, stars, and dust in the nebula are represented by the Gas Fraction, Star Fraction, and Dust Fraction properties.The total number of stars in the Galaxy is given by the galaxy's Star Count property. The number of stars represented by a single Galaxy Nebula is represented by the nebula's Star Count property.Galaxy nebula evolution can also be toggled on and off for all of the nebulae at once in the Galaxy's Evolve Nebula Evolution property in the Galaxy tab. Galaxy nebula evolution can be toggled on and off using an individual Galaxy Nebula's Enable Nebula Evolution property in the Nebula tab of the properties panel.You cannot dictate atmosphere composition, and thus you pretty much have to guess what your atmosphere's properties should be to an extent (or find a way of doing the math yourself).īut overall, it's a pretty good tool for making systems, but I wish it was a bit more in-depth, and it's only worth it for system creation if you're going to be doing a lot of it, in my opinion.Related Properties & Settings Properties ![]() Another issue is that the available parameters for planet atmospheres are limited, with some not being as automated as I'd like. Though it's certainly helpful for creating ypur own things from the ground up. This can make if frustrating trying to recreate very specific values based on some outside source (though in my case its likely only a problem because of the source's lack of accuracy/precision). Certain values of bodies are tied to others, meaning if you change a certain value it has to change a certain other value. I've been using it to recreate star systems based on data from the TTRPG 2300AD, and so far it's been pretty proficient, but there are some annoying restrictions/lack of features. ![]()
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