Isotopes
In space and astronautical engineering, isotopes refer to variants of a chemical element that have the same number of protons but different numbers of neutrons. Isotopes are important in space and astronautical engineering because they are used in various applications such as power generation, propulsion, and scientific research. For example, isotopes of hydrogen such as deuterium and tritium are used in nuclear fusion reactions to generate power. Isotopes of uranium and plutonium are used in nuclear reactors and weapons. Isotopes are also used in scientific research to study the composition and history of celestial bodies such as planets, moons, and asteroids.
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