• September 6, 2007

    Episode 118: Canary Islands Telescope

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    Tests have begun on one of world's largest optical telescopes, located on a mountaintop on the Canary Islands. Situated 7,900 feet above sea level, the huge Gran Telescopio Canarias (GTC) consists of a mirror measuring 34 feet across and is made up of 36 separate hexagonal mirror segments. This Spanish-led telescope will be able to spot some of faintest, most distant objects in universe.