radio astrometry

Radio astrometry is a technique that uses radio telescopes to precisely measure the positions and movements of celestial objects, such as stars or quasars. By observing how these objects’ radio signals change relative to distant background sources over time, scientists can determine their exact location, distance, and motion in space with high accuracy. This method is essential for understanding the dynamics of our galaxy, mapping the universe, and studying objects that emit radio waves. It relies on combining large antennas and sophisticated data analysis to achieve its precise measurements.