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.

"The first time I spotted it, I thought at first it may have been a rare form of blue aurora but then realised it was moving ...

Sometimes the light runs right into one of them. In short, the sky looks blue because the blue portion of sunlight is much more likely to bounce off the molecules in the atmosphere than the ...

In many areas, the Air Quality Index (AQI) climbs in the summer. Hazy skies can signal moderate or even unhealthy levels of ...

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.

"Our dark adapted eye is more sensitive to blue, so we'll perceive the sky brighter, so more light polluted." Original image has been replaced. Credit: Mashable The new study is the most recent in ...

Blue light has a shorter wavelength, due to which it’s scattered more easily by the tiny molecules in the air. This scattering, known as Rayleigh scattering, is why we see a blue sky during the day.