The light blue spiral resembling a galaxy to some appeared mixed in the aurora for a few minutes early Saturday. While some on social media wanted to link it to an alien invasion, the cause of the ...

National Weather Service staff at its Moon office got a few odd calls Tuesday night about a strange-looking blue swirl moving across the sky. “We had a couple of calls on the overnight shift,” said ...

Mesmerizing footage captured this blue spiral in the night sky in Croatia from a SpaceX Falcon 9 rocket. The phenomenon was likely caused by frozen fuel from the second stage of the launch and could ...