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.
Arecibo Observatory Aerial
ESO Submillimetre, Chile
Standing inside the dish at Jodrell Bank
Underneath the mesh at Arecibo
Ooty Radio Telescope
Parkes Radio Telescope
Chilbolton radio telescope, UK
Westerbork Synthesis Radio Telescope WSRT
Russian Spektr R space-born radio telescope
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.
Green Bank Telescope
Largest steerable telescope in the world.
Mount Pleasant Radio Telescope, Tasmania