Renovating a bathroom or entry? Don't forget the mirror. We answer readers' questions about how to hang a heavy mirror on ...

The question remains how to get such large mirrors into space, so it's likely they would have to be built there, and not on Earth. Scientists contemplate building greenhouse gas-producing ...

The Extremely Large Telescope under construction in ... None of that would be possible without some of the most advanced mirrors ever made. Florent Mallet/Mersen Boostec Dr Elise Vernet inspecting ...