Logical explanations take all the fun out of UFO's. After the Falcon 9 rocket launched successfully, later, over on the other side of the world, people in Australia saw a spiraling object in their early morning skies, about 6 am local time. Geoffrey Wyatt, from the Sydney Observatory, said it appeared to have been the Falcon 9 rocket, which launched about an hour earlier.
Another image below.
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The image is from the
9MSN website in Australia,
where you can see more images.
If you recall, there was another spiraling rocket that
created a visual sensation over Norway
in December of 2009.
Hat tip to
The Original Rocket Dungeon.
Added later: Oh, and I see the Bad Astronomer has fully explained the whole thing!