Radioactive Isotopes
Radioactive isotopes are unstable forms of atoms that emit radiation as they decay into more stable forms. In space and astronautical engineering, radioactive isotopes are used for various purposes such as power generation, propulsion, and scientific research. Radioisotope thermoelectric generators (RTGs) are commonly used in space missions to provide electrical power to spacecraft and rovers. Radioactive isotopes are also used in nuclear propulsion systems, such as the Nuclear Thermal Rocket (NTR), which uses the heat generated by the decay of radioactive isotopes to heat a propellant and create thrust. In scientific research, radioactive isotopes are used as tracers to study the behavior of materials and fluids in space environments.
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