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.

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.

Complicated physics makes these molecules scatter more blue light than red ... far removed from humanity’s wasted sky-directed light, that background can be as dim as 22 mag/arcsec 2.

The appearance of an extraordinary spiral of blue light in the sky above New Zealand has prompted amazement among stargazers - and theories ranging from aliens to black holes. Astronomer Alasdair ...

when we see a blue sky on a sunny day, what are we seeing? Are we seeing blue nitrogen or blue oxygen? The simple answer is no. Instead the blue light we see is scattered sunlight. The Sun ...

It trundles along the recently-electrified railway lines around Bristol and shoots a blue light up into the night sky, to check for wear and tear on the overhead electrified wires. A Network Rail ...