Video: Fourth mirror of Giant Megellan telescope being made
The fact that it takes a full year to cast and cool just one of the mirrors that were constructed for the Giant Magellan Telescope, gives you an idea of how massive this project is. Production and design of the GMT is very unique and offers several advantages pushing the limits of the current class of observatory telescopes.
When approached with why scientists and researchers are creating the Giant Magellan telescope, they gave this very appropriate answer,
“The GMT aims to discover Earth-like planets around nearby stars and the tiny distortions that black holes cause in the light from distant stars and galaxies.