How to build one of Earth's largest telescopes

Huge telescopes dot mountainsides around the world.  From Hawaii to Chile, scientists seek out the perfect site with fair weather and dark, clear skies to peer deeply into space, clocking the movements of distant stars, planets, and other objects far beyond what we can see with the naked eye. SEE ALSO: Construction Begins on One of the World's Largest Telescopes A new observatory called the Giant Magellan Telescope, currently being built in Chile, should eventually be able to see far-off alien ...