“Radio Astronomy: Observing the Invisible Universe” S:1 E:8 Tour of the Green Bank Telescope

S:1 E:8 Tour of the Green Bank Telescope At 17 million pounds, and with more than 2,000 surface panels that can be repositioned in real time, this telescope is one of the largest moveable, land-based objects ever built. The dish could contain two side-by-side football fields, but when its panels are brought into focus, the surface has errors no larger than the thickness of a business card. Welcome to this rare insider’s view.