Io

Io is the most geologically active body in the solar system. Constant volcanic activity replenishes the miniscule atmosphere and skyrockets the temperature. Why would you want to colonize this place? The exotic Jovian moon Io. Ultra low pressure, freezing cold, dark, and volcanically active planet with interesting atmosphere and storms. Solar: 46W/mm to 56W/mm Wind: None Atmosphere: 100% Oxygen 0. 7Pa to 0. 5Pa pressure -111C to -136C temperature Atmosphere During Eruption Storms: 90% Pollutant 10% Oxygen 70Pa Pressure 1300C Temperature Eruptions happen frequently and generate pollutant for a short time. All of it will freeze out of the atmosphere shortly after the event ends. Despite the freezing average air temperature, there is no ice of any kind due to the constant eruptions. Generating power, finding water and smelting will all be very difficult, you'll have to figure out some way to use the atmosphere. Notes: -Space map is untested and might be weird. -0. 5Pa is around the lower limit of gas quantity that the game engine permits, real Io has ~2000x lower pressure than that. -The game initially starts with the full pollutant-including atmosphere which slowly freezes out over the first day or so. Expect strange wind effects during that time. Thanks to a1ready ! on discord for the help with terrain!