On a tranquil summer evening, just as the sun dips below the horizon and darkness begins to settle, an ethereal spectacle ...

(WFLA) — Stargazers in parts of Europe were stunned by an unusual sight on Monday evening: a large, glowing blue spiral ... the setting sun and appearing to spin in the sky.

This scattering makes them look bright and white against the blue sky. However, clouds can appear gray ... and pink due to the angle of the sun's rays. These color variations add to the ever ...