modern astrometry technology

Modern astrometry uses advanced telescopes and precise instruments, such as space-based observatories like Gaia, to accurately measure the positions, distances, and motions of stars and celestial objects. These instruments track tiny changes in position over time, often using laser and optical sensors, to determine an object's distance through parallax and understand its movement through space. By eliminating Earth's atmospheric distortion and employing high-precision detectors, modern astrometry provides detailed maps of our galaxy, enhances our understanding of stellar dynamics, and aids in identifying exoplanets and studying the universe’s structure.