Observatories in Chile’s Atacama Desert, including the world’s largest optical telescope, could be blinded by light pollution ...

The European Southern Observatory's (ESO) Extremely Large Telescope (ELT) — the world's largest visible- and infrared-light telescope — is currently under development on the Cerro Armazones mountain ...

Jean Vernin, Casiana Muñoz-Tuñón, Marc Sarazin, Héctor Vazquez Ramió, Antonia M. Varela, Hervé Trinquet, José Miguel Delgado, Jesús Jiménez Fuensalida ...

Astronomers are sounding alarm bells as the world's most precious sky-observing location faces a risk of being blinded by ...

Dozens of boxes holding mirrors are placed along a remote desert hill in northern Chile as workers make progress in the ...

European Southern Observatory Director General Xavier Barcons told Space.com that astronomers expect the project to brighten the sky by up to 10 percent around the observatory.

The European Southern Observatory's (ESO) Extremely Large Telescope (ELT ... or changes in temperature. On-site webcams, drone footage and photographs of the construction site allow for ...

Astronomers sound the alarm as a proposed renewable hydrogen project in Chile threatens to disrupt the pristine night skies of Mount Paranal, home to the world-renowned Very Large Telescope.

The European Southern Observatory is at serious ... Paranal Observatory is home to ESO’s Very Large Telescope (VLT), which comprises four telescopes each with a 27-foot (8.2-meter) mirror ...