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Geodesy is the scientific discipline that studies the Earth's geometric shape, orientation in space, and gravity field. As a key component of physical geography, it focuses on precise measurements of the Earth's size, shape, and mass distribution. Geodesists use advanced techniques such as satellite-based positioning systems, ground-based surveying methods, and mathematical modeling to analyze and understand the Earth's geometric and gravitational properties. By examining these aspects, geodesy contributes significantly to our understanding of various geoscience fields, including tectonics, oceanography, and climate science. In this context, geodesy serves as a critical link between the Earth's surface processes and its deep interior dynamics, further emphasizing its importance within the broader realms of Science, Environmental Science, and Geography.