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H 1

Abundance: 0.03% (as H2O)

Hydrogen (periodic table symbol: H1) is a chemical element that can be found in the atmosphere and in frozen water on Mars.

Liquid hydrogen has a density of 70 kg/m3. Gaseous hydrogen at standard atmospheric pressure and temperature has a density of 0,089 kg/m3.

Biological significance

The metabolism of human beings, animals and microbes depends on water, composed of hydrogen and oxygen. The human body contains about 70% water. Human beings need about 2 liters water per day for drinking, hard working people need even more. Some organisms, Xenotrophs, can directly metabolize hydrogen as a source of energy.


Hydrogen can be produced by electrolysis of water, thermally via the Sulfur/Iodine cycle[1] or with CO to produce syngas in the Zinc/Sulfur/Iodine cycle[2]. Thermal production of hydrogen can be achieved using nuclear heat, enhanced with a turboinductor[3] to achieve the high required operating temperatures. Hydrogen can also be produced through the catalytic decomposition of ammonia[4], allowing for the non cryogenic storage of bulk hydrogen.