astrometric measurements

Astrometric measurements involve determining the positions and motions of celestial objects, like stars and planets, in space. By accurately measuring angles and distances from the Earth to these objects, astronomers can calculate their locations and how they move over time. This data helps in understanding the structure of our galaxy, the orbits of planets, and the behavior of gravitational forces. Precise astrometric techniques, like using telescopes and satellite observations, have led to discoveries such as exoplanets and even the expansion of the universe.