Time-lapse video taken from Croatia at around 4 p.m. EST, or 9 p.m. local time, shows the glowing light spinning across the sky in what many social media commentators likened to a spiral galaxy.

A weird blue spiral of light, captured on photo in the night sky? As much as we might want it to be, we know by now that it's not aliens (it's never aliens, OK?). But little green men aside, the ...

These tiny atmospheric bits are closer in size to shorter wavelengths, which is why blue and violet light scatter more easily. The result is our beautiful blue sky. But wait!

A halo of red light briefly appeared in the night sky above a town in Italy. (Image credit: Valter Binotto) This bizarre disk of red light appeared to briefly flash above the town of Possagno in ...

The simple answer is no. Instead the blue light we see is scattered sunlight. The Sun produces a broad spectrum of visible light, which we see as white but it includes all the colors of the rainbow.

The 2020 report said Detroit residents had been baffled 'when a stunning orange and purple-haze illuminated the sky.' The light, the report added, was "caused by greenhouse cannabis farms." Read more: ...

A 2020 study published in the Indian Journal of Ophthalmology found that during COVID-19 lockdowns, for example, 32.4 percent of the study population used a blue-light-emitting device 9 to 11 ...

Two blue beams, consisting of 88 high-powered xenon lightbulbs and positioned to echo the Twin Towers, will rise 4 miles into the sky in Lower Manhattan from dusk until dawn Wednesday.