While photographing the auroras during a geomagnetic storm, Mike Lewinski caught sight of something extraordinary: a brilliant white beam of light tearing through the night sky. He was shooting ...

White light interferometry (WLI ... This light source then targets a beam splitter, which splits the light into one beam that targets the sample, and one that targets the reference mirror.

Residents in several states have been left in awe after witnessing the atmospheric phenomenon known as pillars of light that some liken to beams from alien spacecraft. While rare, the pillars form ...

The lighthouse appeared overnight. Painted on a wall tucked away in a quiet Marseille street, its beam aligned perfectly with ...

White dwarf pulsars include a rapidly spinning, burnt-out stellar remnant called a white dwarf, which lashes its neighbour -- a red dwarf -- with powerful beams ... 773 light years away from ...