Scientists outline the scientific and technical case for building a northern-hemisphere 30-meter telescope at La Palma to support time-domain and multi-messenger astronomy.

Cherenkov Telescope Array Observatory to be world’s largest and provide new insights into high-energy Universe.

A group of ESO and CTAO representatives, as well as Chilean authorities and regional representatives pose for a group photo near a monument at the CTAO-South site, where a symbolic time capsule was ...

Perched high in the foothills of Chile’s Andes mountains, a revolutionary new space telescope has just taken its first pictures of the cosmos—and they’re spectacular. Astronomers are excited about the ...

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 ...

In late June 2025, a rare weather event disrupted operations in one of the most arid regions on Earth. A snowstorm swept across northern Chile’s Atacama Desert, temporarily shutting down the Atacama ...

Oct. 2 (UPI) --The Paranal Observatory, one of the world's most important for astronomers, faces a major risk of providing clear images because of a proposed green hydrogen and ammonia plant planned ...

This handout provided by the European Southern Observatory shows a detailed, thousand-colour image of the Sculptor Galaxy captured with the MUSE instrument at ESO's Very Large Telescope (VLT). (ESO ...

ESO's Extremely Large Telescope is seen from directly above as construction continues towards the observatory's completion. When you purchase through links on our site, we may earn an affiliate ...