Bad Astronomy's Phil Plait explains why all those UFO reports about "sky spirals" seen over Australia were caused by the rocket exhaust from the Falcon 9's second stage. It's a rerun of last December's Norwegian sky-spiral sighting. Similar swirls have been seen in the wake of Chinese missile tests as well, by the way. The truth is out there ... on the Web!
SpaceX's Falcon 9 launch sparks UFO reports in Australia
