Pictures of a strange spiral that appeared in the Northern Lights are making the rounds.
- Northern light enthusiasts got a surprise Saturday when the baby blue spiral, which looked kind of like a galaxy, appeared amid the aurora for a few minutes.
- Officials say the cause was excess fuel that had been released from a SpaceX rocket that launched from California about three hours before the spiral showed up.
- Sometimes rockets have fuel that needs to be jettisoned, and when they do that at high altitudes, that fuel turns into ice and can appear as a swirl.