The visible light comprises a minuscule fraction of the entire electromagnetic spectrum. Radio telescopes allow us to observe what cannot be seen, like microwave background radiation—the echo of the Big Bang. Our friends at Oobject have assembled 18 of the most expansive intergalactic listening stations.

Be sure to also check out these incredible planetarium projectors, these mechanical planetary models, and some more wondrous telescopes.

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Arecibo Observatory Aerial

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ESO Submillimetre, Chile

Astropeiler

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P-400 Ukraine

Standing inside the dish at Jodrell Bank

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Underneath the mesh at Arecibo

Ooty Radio Telescope

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Jodrell Bank

Parkes Radio Telescope

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Chilbolton radio telescope, UK

Westerbork Synthesis Radio Telescope WSRT

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Russian Spektr R space-born radio telescope

ADU-1000

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Bell Labs Horn Antenna, NJ

Possibly the most important and unusual telescope of all - the one where the echo of the Big Bang was discovered.

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Green Bank Telescope

Largest steerable telescope in the world.

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Mount Pleasant Radio Telescope, Tasmania

TNA-1500 radio telescope, Russia

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South Pole radio telescope