Satellites beaming sunlight down to Earth sound like science fiction – and they have astronomers very worried.

“If you wanted to take a picture of the rocket as it flew past, you would have to take into account that the light from ...

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to ...

The startup Reflect Orbital aims to keep solar farms running at night by reflecting sunlight from space and has sparked ...

White light interferometry (WLI) is a contact-free optical method for measuring surface height. It uses the phase difference between the light reflected off a reference mirror and the target sample to ...