![]() The phase diagram for water to be implemented in Universe Sandbox. You can compare our water phase diagram below, which has been edited for clarity, to the real-life phase diagram of water above. Our phase diagrams have been simplified for performance reasons but still closely reflect the scientific phase diagrams. We plan to show the phase diagrams we’re using to simulate each material eventually, but right now, they’re primarily for testing. A supercritical fluid (which we have added to this diagram) has properties of both liquids and gases and is the phase state of atmospheres on gas giant planets. The Freezing and Boiling points are the temperatures at which water freezes and boils on Earth, and the triple point shows at what temperature and pressure water can exist as a solid, liquid, and gas at the same time. Phase diagram for water shows what phase water has at different temperatures and pressures. Check out the real-life phase diagram of water from Wikipedia as an example, pictured below. Our phase diagrams, which show a material’s state at different temperatures and pressures, are based on data taken in labs as well as geological and astrophysical models of planets. A material’s phase will be simulated based on its temperature and pressure using something called a phase diagram. In our new system, all new materials can exist inside of, on the surface of, or in the atmosphere of a planet. The Liquid Depth Data View shows the depth and location of the methane lakes. Using New Materials for Simulation Titan with realistic lakes of liquid methane in turquoise at its poles. Want to know the freezing point of carbon dioxide or see how fast it’s evaporating on your custom planet? We’ll simulate it in real time. Many, like oxygen and carbon dioxide, will also be necessary for life simulation.Įach material has all the properties described above, and they will update in real-time according to the conditions on the planet (though iron and silicate will only exist inside planets and won’t have customizable colors). These are the materials necessary to simulate the most interesting internal, liquid, and atmospheric properties of most objects in our Solar System. Our new composition system has 12 materials: iron, silicate, water, hydrogen, helium, carbon dioxide, oxygen, sulfur dioxide, methane, nitrogen, argon, and ammonia. Liquid and solid density, heat of fusion, and heat of vaporization – to determine how fast water flows, evaporates, and freezes on planet surfaces.Mass of the material in each phase (solid, liquid, or gas).Melting point – temperature where a material changes from a solid to a liquid.Boiling point – temperature where a material changes from a liquid to a gas.Water, the only material currently simulated across an object’s surface, has some additional properties Used to create clouds of evaporating gas called volatiles. Molecular weight – average mass of a molecule of the material.Used to determine the Surface Heat Capacity of a planet. ![]() Thermal capacity – energy required to increase the material’s temperature by one degree.Density – to compute an object’s mass and radius and determine where materials are within a planet (for example, iron is the densest so it’s at the core).Universe Sandbox’s current composition system uses four materials (iron, silicate, water, and hydrogen) each with a set of physical properties including This feature and interface are a work in progress. Material Properties in Universe Sandbox The Composition tab shows material properties, including total mass, the percentage and mass in each phase (solid, liquid, and gas), and more. Learn how to opt-in to a preview version on Steam: Try the Terraforming | Update 34 preview right now!Įight new materials and our new composition system are now available for testing and feedback. Our new system will allow you to realistically simulate planet surfaces and atmospheres, accurately terraform planets, and more. However, our current composition system is too simple to simulate phenomena like lakes of liquid methane on Saturn’s moon Titan. Every planet in Universe Sandbox is simulated with a combination of materials, like iron and water, that are used to compute properties like planet radius and water flow. Our new composition system, including eight new materials, like oxygen and methane, is still in active development and has not been released, but you can opt-in to a preview version now on Steam. These materials are transferred to the Moon’s surface, forming lakes that flow together and eventually evaporate to create an atmosphere. The Moon is bombarded with asteroids made of carbon dioxide, sulfur dioxide, methane, and water.
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