Construction of the world's largest telescope has reached its highest point with assembly of the roof's dome and large sliding doors that will shield the observatory. The European Southern Observatory ...

I have been writing about the Giant Magellan Telescope for a long time. Nearly two decades ago, for example, I wrote that ...

In a breathtaking new photograph shared by the European Southern Observatory (ESO), the sun rises behind the Extremely Large Telescope (ELT), still under construction in the Chilean Atacama Desert.

The massive dome measures 305 feet (93 meters) in diameter, or about the size of a football field and stands 263 feet (80 meters) tall. When you purchase through links on our site, we may earn an ...

Construction on the European Southern Observatory's Extremely Large Telescope began in 2014. (G. Vecchia/ESO via SWNS) By Dean Murray The world's largest optical telescope is seen taking shape in an ...

The world's largest optical telescope is seen taking shape in an amazing image. The European Southern Observatory's Extremely Large Telescope (ELT) is being constructed on the Cerro Armazones mountain ...