Geodesy is the scientific field concerned with the precise measurement of the Earth's geometric shape, its size, and the gravity field it experiences. It develops comprehensive models of the planet's physical dimensions and orientation in space, forming the basis for accurate spatial referencing across various global applications. This discipline utilizes techniques including orbital satellite measurements, sophisticated surveying instrumentation, and analysis of gravitational variations. The data gathered is vital for numerous fields, supporting tasks such as crustal deformation monitoring, large-scale infrastructure planning, resource extraction, and the development of highly precise terrestrial maps.