Radio telescopes are instruments used to detect, process, and interpret radio waves from celestial objects in the universe. They are essential tools in modern astronomy, allowing scientists to study a wide range of phenomena and materials in the cosmos.Typically consisting of one or more parabolic dish antennas, radio telescopes capture and convert radio waves emitted by distant galaxies, stars, planets, nebulae, and other celestial bodies into electrical signals. These signals are amplified, filtered, processed, and converted to create detailed images for astronomers, showing the precise positions, distributions, intensities, and spectral features of radio sources in the universe.Radio telescopes play a crucial role in investigating cosmic mysteries, cosmic evolution, astrophysics, gravitational waves, and other fields. Countries around the world invest substantial funding and manpower to construct radio observatories and continuously enhance the accuracy and resolution of radio astronomy observations using cutting-edge technology. Through radio astronomy, scientists have unraveled many cosmic puzzles, advanced the study of astronomy, and deepened humanity's understanding and exploration of the cosmos.