One of the world's largest optical telescopes is set to peer into space for the first time. Installed on a 2,400m-high (7,900ft) peak on the Canary Island of La Palma,
the huge telescope consists of a mirror measuring 10.4m (34.1ft) in diameter.
The Spanish-led Great Canary Telescope (GTC) is extremely powerful and will be able to spot some of the faintest, most distant objects in the Universe. The "first light" ceremony will take place on Friday...
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http://news.bbc.co.uk/2/hi/science/nature/6897293.stm