glowing blue spiral in the sky. Images and videos posted to social media showed the strange cloud-like phenomenon, with users wondering what caused the intriguing sight. The UK Met Office, ...

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

which often will complement the sunset with a nice surface to reflect the colors of the setting sun. The sky behind the clouds will be a deep blue with very little moisture. These deep blue winter ...