bright blue spiral spotted over Europe on Monday night sparked chatter on social media about what might have caused the mysterious vortex. Videos posted on X showed a blue orb in the night sky ...

Around 9:45 p.m., a bright blue-green ball flew across the sky. Eyewitness reports came in from as far as Georgia, the Carolinas and Missouri. It's likely that the path was over central Kentucky.

Residents in parts of New York City and North Jersey received quite the scare on Thursday night, as a mysterious blue light that could be seen for miles engulfed the sky in the Astoria section of ...