Construction on the worlds largest optical telescope began with a bang Thursday, as workers demolished a hilltop in Chiles Atacama desert. The European Extremely Large Telescope (E-ELT) telescope, being built by the European Southern Observatory, aims to give astronomers new insight into the origins of the universe and help search for potentially habitable planets elsewhere in the galaxy. Currently, we have no proof of the existence of an Earth-like planet at the same distance from the sun in our galactic neighborhood, said astronomer Fernando Comeron, ESOs representative in Chile.