Lauren Wood described the sight on the Crib Goch ridge as a "spiritual experience".

The 22° Halo is a striking optical phenomenon that manifests as a circular ring of light around the sun or moon. This halo is formed by the refraction of light through ice crystals in high ...

That's called a sun pillar. According to the National Weather Service, the optical phenomenon appears as a vertical shaft of light, visible most often at sunrise or sundown. SEE ALSO: Sunshine and ...

Optical illusions are a striking phenomenon that regularly goes viral online, leaving all and sundry baffled. These interesting photos fool our brains ...

Earth crosses through Saturn’s “ring plane,” making the gas giant’s most iconic feature become nearly invisible ...

Some optical phenomena depend on the quantum nature of light and the interaction of light with matter. Geometric optics and physical optics are models that describe phenomena while ignoring properties ...

This week, an optical illusion went viral ... Pareidolia is a brain phenomenon in which you see or hear something significant in a random image or pattern. While you might not have heard of ...

Quantum critical points are thresholds that mark the transition of materials between different electronic phases at absolute ...

Physicists at the University of Ottawa add an orbital spin to their laser beams to control the movement of electrons in their ...