Nitrogen
Nitrogen is a chemical element with the symbol N and atomic number 7. In the context of space and astronautical engineering, nitrogen is an important component of the Earth's atmosphere and is used in various applications such as in rocket propellants, as a pressurizing gas, and as a coolant. Nitrogen is also used in the production of ammonia, which is used as a rocket fuel. Additionally, nitrogen is used in the construction of space habitats and in the development of life support systems for long-duration space missions.
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