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User:GreatTuna2/Terraforming
The principle of Terraforming in Aurora is based on changing the atmosphere in order to alter the environment of the planet so it is suitable for your species.
The actual mechanics of using terraforming in the game interface are relatively straightforward. If you have any terraforming installations on a planet or any ships with terraforming modules in orbit, go to the Environment tab, select the gas you want and check the Add Gas checkbox if you want to add the gas rather than remove it. Terraforming installations can be built by industrial capacity and transported to a different planet with freighters.
A terraforming ship or station is easy to design, as it only requires Terraforming Modules to work. Both spaceborne and ground-based terraforming installations are boosted by the Terraforming skill of the ship captain and governor, respectively.
Colony Cost
Colony Cost (CC) is a measure of the amount of infrastructure needed to support the population on a given celestial body. CC 0 means the body is perfectly habitable and needs no infrastructure whatsoever. Otherwise, the colony will need
CC * 100 / Population Density Modifier (usually 1)
units of infrastructure to support 1 million colonists.
There are multiple factors that influence colony cost of a celestial body, with the highest number out of them being the final colony cost:
- Temperature will affect colony cost if it's outside of the species' tolerances, applying a colony cost of
Temperature Difference / Temperature Deviation. If the body is tidally locked against the star, this penalty is reduced by 80% while also reducing population capacity by the same amount. - Lack of oxygen will impose a flat colony cost of 2.0. Same cost will apply for having too much of it (more than 30% of the total atmosphere).
- Any dangerous gasses in sufficient quantities will impose a flat colony cost or 2.0 or 3.0 depending on the gas involved.
- Excessive atmospheric pressure will affect colony cost, applying a colony cost of
Atmospheric Pressure / Species Maximum Pressurewith minimum of 2.0. - Gravity below species' tolerances will impart a colony cost of 1.0, as well as require Low-Gravity Infrastructure instead of regular one. Gravity above species' tolerances renders the world uninhabitable.
List of gasses
| Gas | Toxicity (for oxygen-breathing races) | Boiling Point | Greenhouse Effect |
|---|---|---|---|
| Hydrogen | Colony cost 2 (safe level 500 ppm = 0.05%) | 20K = -253C | None |
| Helium | None | 4K = -269C | None |
| Methane | Colony cost 2 (safe level 500 ppm = 0.05%) | 109K = -164C | Warming |
| Ammonia | Colony cost 2 (safe level 50 ppm = 0.005%) | 240K = -23C | None |
| Water | None | 245K = -18C | None |
| Neon | None | 27K = -246C | None |
| Nitrogen | None | 77K = -196C | None |
| Carbon Monoxide | Colony cost 2 (safe level 50 ppm = 0.005%) | 82K = -191C | None |
| Nitrogen Oxide | Colony cost 2 (safe level 5 ppm = 0.0005%) | 121K = -152C | None |
| Oxygen | Colony cost 2 (safe level 30,000 ppm = 30%) | 90K = -183C | None |
| Hydrogen Sulphide | Colony cost 2 (safe level 20 ppm = 0.002%) | 212K = -61C | None |
| Argon | None | 87K = -186C | None |
| Carbon Dioxide | Colony cost 2 (safe level 5,000 ppm = 0.5%) | 195K = -78C | Warming |
| Nitrogen Dioxide | Colony cost 2 (safe level 5 ppm = 0.0005%) | 262K = -11C | Warming |
| Sulphur Dioxide | Colony cost 2 (safe level 5 ppm = 0.0005%) | 263K = -10C | Warming |
| Chlorine | Colony cost 3 (safe level 1 ppm = 0.0001%) | 239K = -34C | None |
| Fluorine | Colony cost 3 (safe level 1 ppm = 0.0001%) | 85K = -188C | None |
| Bromine | Colony cost 3 (safe level 1 ppm = 0.0001%) | 332K = 59C | None |
| Iodine | Colony cost 2 (safe level 1 ppm = 0.0001%) | 457K = 184C | None |
| Aestusium | None | 1K = -272C | Warming |
| Frigusium | None | 1K = -272C | Cooling |