Staff at the European Southern Observatory have a system to clean the La Silla Observatory's delicate mirrors without breaking them. When you purchase through links on our site, we may earn an ...

Here are two engineers practicing “snow cleaning” on a test telescope mirror for the James Webb Space Telescope. I’m not exaggerating when I say this is the coolest way to dust off any surface without ...

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 ...