A mysterious spiraling blue light illuminated the night skies over Europe on ... Time-lapse video taken from Croatia at around 4 p.m. EST, or 9 p.m. local time, shows the glowing light spinning across ...

A mysterious spiraling blue light illuminated the night skies ... or 9 p.m. local time, shows the glowing light spinning across the sky in what many social media commentators likened to a spiral ...