A mysterious spiraling blue light illuminated the night ... shows the glowing light spinning across the sky in what many social media commentators likened to a spiral galaxy.

On a clear, sunny day, the sky above us often glows a brilliant ... Understanding why the sky is blue reveals a story of light, molecules, and the interplay of colors in our world.

new video loaded: A Curious Blue Swirl of Light Captivates Sky Watchers in Europe The Met Office, Britain’s weather service, said the light was most likely caused by a SpaceX rocket launch.