Chile is constructing the Extremely Large Telescope (ELT), the world's largest optical and near-infrared telescope, atop ...

The ELT is on its way to becoming the largest optical telescope in the world, and as it rises beneath some of the clearest ...

ESO's Extremely Large Telescope at Cerro Armazones in Chile's Atacama Desert is seen from directly above while its ...

across — the largest ever made for an optical telescope. The massive dome measures 305 feet (93 meters) in diameter, or about the size of a football field and stands 263 feet (80 meters ...

Beneath Chile’s brilliant skies, the ELT grows—an engineering giant ready to capture the secrets of the universe with the ...

This particular telescope is under construction in the Atacama Desert in northern Chile, one of the darkest places on Earth ...

On a volcanic island under some of the darkest skies on Earth, I rediscovered the night sky and came home with a new view of ...

The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from ...

The National Science Foundation’s Daniel K. Inouye telescope debuted a close-up of the sun captured by its new, ultra-powerful imaging tool. Here’s what you can see.

The VTF features the largest Fabry-Pérot ... something no other instrument in the telescope can achieve in the same way," said Dr. Stacey Sueoka, Senior Optical Engineer at NSO.

including its primary mirror that measures 128 feet (39 meters) across — the largest ever made for an optical telescope.

A newly released image of the sun captured by the world's largest solar ... instrument in the telescope can achieve in the same way," said Dr. Stacey Sueoka, a senior optical engineer at the ...