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Radio astronomy is the branch of astrophysics that studies celestial objects and phenomena through the detection and analysis of radio waves they emit, using specialized telescopes and instruments. It allows scientists to study various astronomical objects such as stars, galaxies, pulsars, quasars, and the interstellar medium, which may be difficult or impossible to observe in other regions of the electromagnetic spectrum due to obscuration by dust or other factors. Radio astronomy has played a crucial role in many significant discoveries in astrophysics, including the first detection of black holes and the cosmic microwave background radiation. By studying radio waves from space, astronomers can gain insights into fundamental physical processes and the structure and evolution of the universe.