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A teenager recorded that mysterious black ring in April when it appeared in the sky over Warwick, England, leaving witnesses staring up at it with one buried thought in the back of their minds clawing to the surface: "How much longer until this thing kills us?" Witnesses speculated that the strange phenomenon was anything from an alien UFO to a (massively overweight) ghostly spirit, and weather experts further drew out their paranoia when they confirmed that it wasn't weather-related. When interviewed by HuffPo, one "UFO expert" ruled it either a pack of millions of bees or witchcraft. And somewhere, someone was rooting for "the ghosts of magical alien bees."

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But what was it, really? We may never know for su- oh, we already do? It's called a vortex ring, which, despite sounding like a portal to another dimension, is just a ring of smoke that travels at a constant speed until it gets too tired to keep going and just sorta stays suspended there, which in this case resulted from a local business testing out its fireworks effects. Here's another one:

thechronicle.com.au

Coincidentally, it was downwind of the stage of that night's Snoop Lion show.