Mysterious Giant Spiral of Light Appears Above Alaska.

A spiral-shaped object, nicknamed "SpaceX spirals," appeared in the night sky above Alaska on April 15, formed by rocket fuel ejected from the fast-spinning upper stages of Falcon 9 rockets that gets frozen in space and reflects sunlight back towards Earth. The spiral was visible for around seven minutes and was captured on video by cameras at the University of Alaska's Poker Flat Research Range. SpaceX spirals have become more common in recent years as the number of SpaceX launches has increased.