Astrometry
Astrometry is the branch of astronomy that involves precise measurements of the positions and motions of stars and other celestial bodies. It is a fundamental part of space and astronautical engineering as it provides critical information for spacecraft navigation and mission planning. Astrometry involves the use of telescopes and other instruments to measure the positions and movements of celestial objects with high accuracy. This data is used to create three-dimensional maps of the universe, study the dynamics of galaxies and star systems, and search for exoplanets. Astrometry is also used to determine the orbits of asteroids and comets, which is important for predicting potential impact hazards. In addition, astrometry is used to measure the parallax of nearby stars, which is used to determine their distance from Earth.
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