The Thirty Meter Telescope (TMT) - due to be the world's widest eye on space - has got the go-ahead for construction on the summit of Mauna Kea, Hawaii.
TMT will join 13 others on the extinct volcano but will dwarf them all: the biggest now are the twin 10-metre Keck telescopes. The summit is a perfect location as it offers clear skies for 300 days of the year.
Source:
http://www.electronicsweekly.com/Articles/2013/04/18/55961/science-worlds-largest-telescope-gets-go-ahead.htm
