A radio telescope is a type of telescope that detects radio waves emitted by celestial objects. Unlike optical telescopes that observe visible light, radio telescopes use large dishes to collect and focus radio signals from space. These signals can provide valuable information about the structure and behavior of stars, galaxies, and other astronomical phenomena. Radio telescopes can be found in various locations around the world, often in remote areas to minimize interference from man-made radio signals. They are essential tools for astronomers studying objects like pulsars, quasars, and cosmic microwave background radiation, contributing significantly to our understanding of the universe and its origins.