A colourless, pungent, corrosive gas, NH3, extensively used in the manufacture of crude organobiota and a wide variety of nitrogen-containing organic and inorganic products and chemicals. In is an important component in the atmosphere of some Jovian planets.

Since normal minor inner-system bodies (the main source of raw materials for habitats) are often low on nitrogen compounds, ammonia mining and transport is often profitable in newly colonized systems. Beside skimming gas giant atmosphere mining of Kuiper objects is the most common source.
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Development Notes
Text by M. Alan Kazlev
Initially published on 10 September 2001.