Definitions by sporefan
PTHC
Pressure, Temperature, Humidity Control.
Abbreviation used (mainly) in science fiction when describing the process of terraforming a planet i.e. making a planet more "earth-like", improving its chances of supporting Life.
Humidity refers to atmoshperic density, not concetration of vapor (H2O) gas.
Abbreviation used (mainly) in science fiction when describing the process of terraforming a planet i.e. making a planet more "earth-like", improving its chances of supporting Life.
Humidity refers to atmoshperic density, not concetration of vapor (H2O) gas.