ESO

eso.org

Welcome to the most powerful astronomical observatories in the world.

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Visit eso.org → RSS feedOn Hacker News Oct 2012 – Jul 2026

Science & Space 22 Society, Policy & Culture 2

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World's darkest and clearest skies at risk from industrial megaproject

2025252 points160 comments Science & Space details

On December 24th, AES Andes, a subsidiary of the US power company AES Corporation, submitted a project for a massive industrial complex for environmental impact assessment. This complex threatens the pristine skies above ESO’s Paranal Observatory in Chile’s Atacama Desert, the darkest and clearest of any astronomical…

“Beyond the limit”: Satellites and mirrors in space pose threat to the night sky

2026190 points318 comments Science & Space details

A new European Southern Observatory (ESO) study has found that current proposals to launch over 1.7 million satellites into orbit, including extremely bright ones, would have “devastating consequences for astronomy.” According to the study, no more than 100 000 faint satellites, below naked eye visibility, should…