Radio telescopes are devices that capture radio waves through a large antenna that has a parabolic shape.
Normally they are not unique, they are a park of radio telescopes. The largest radio telescope in the world is located in Russia and has a diameter of approximately 576 meters. There are mobile radio telescopes and other fixed radio telescopes.
A famous fixed radio telescope is that of Arecibo in Puerto Rico for its research in radio astronomy.
Galaxies, pulsars, quasars usually emit radiation that is only visible in the radio region of the electromagnetic spectrum. Hence the importance of these devices in the investigation of the universe.
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