Green Bank Telescope
![Green Bank Telescope](https://public.nrao.edu/wp-content/uploads/2013/09/gallery-images-largeGBT_23_large.jpg)
The Green Bank Telescope is the world’s largest, fully-steerable telescope. The GBT’s dish is 100-meters by 110-meters in size, covering 2.3 acres of space.
Credit: NRAO/AUI/NSF
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