While there can be a rainbow-like appearance for several other optical meteorological phenomena (sun dogs, cloud iridescence, etc.), this week's Sunday Science focuses on the classic arch that can ...

The 22° Halo is a striking optical phenomenon that manifests as a circular ... A glory is a mesmerizing display of concentric ...

A woman has described the "breath-taking" experience of seeing a rare ghostly shadow phenomenon while out walking. A Brocken spectre optical illusion happens when a person's own shadow is projected ...

A rainbow is a full circle, but from the ground, we only see part of the arc. The “end” that seems to touch the earth is an optical illusion ... a beautiful natural phenomenon, they remain ...

If you looked up to the sky here last Saturday evening you might have briefly thought Thanos was about to snap his fingers or ...