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You can build a simple radio telescope from a satellite dish and a satellite signal strength meter. Diy Telescope, Hubble Space Telescope, Space And Astronomy, Radios, Other Galaxies, Ham Radio Antenna, Satellite Dish, Radio Wave, Instruments
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How to Make a Simple Radio Telescope

Radio astronomy is the science of using radio waves to explore the universe. Radio receivers are used to listen to the sun, the moon, the Earth itself, Jupiter, the Milky Way an... 
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