Through the centuries, the telescope has gone through an incredible evolution to become the tool it is today. In the modern ...

Staff at the European Southern Observatory have a system to clean the La Silla Observatory's delicate mirrors without breaking them. Big telescopes feature some of the finest and most precise mirrors ...

Inside a massive clean room at NASA’s Goddard Space Flight Center Maryland the James Webb Space Telescope team is steadily installing the largest space telescope mirror ever Unlike other space ...

It's a delicate process in which science meets craftsmanship in the Chilean desert. Night after night in the dry air of Chile's Atacama Desert, fine dust and pollutants settle on the aluminum coating ...

Big telescopes feature some of the finest and most precise mirrors in the world. So when one gets dirty, what happens? The European Southern Observatory (ESO) operates some of the most powerful ...