Radioisotope Thermoelectric Generators in Space Exploration

Authors

  • Ziming Fang Author

Keywords:

Radioisotope Thermoelectric Generators (RTG), Silicon-Germanium Alloys (SiGe), Seebeck Coefficient, Advanced Stirling Radioisotope Generators (ASRG)

Abstract

This research essay will explore the mechanism and performance of radioisotope thermoelectric generators used in spacecrafts, aiming to manifest its validity in the space exploration industry. Data gathered by experts will be utilized to examine its performance, and further compare it with other space power systems. The results indicates that the technology is suitable for powering long-range space missions, and even surpasses new technologies such as advanced Stirling radioisotope generators. Instead of relying on the environment like solar panels, it generates thermal energy using radioactive decay and converts it directly into electricity. Although using thermoelectric effect could lower efficiency, it simplifies the manufacturing process, reducing the cost of its production. This highlights the utility of the technology, and its potential in powering countless more space missions in the future. In the end, the essay will conclude with a summary of main points and the key challenges that lies ahead for radioisotope thermoelectric generators in space exploration.

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Published

2025-10-24

Issue

Section

Articles