The spectacular pyrotechnics display of the most watched opening ceremony in summer Olympics history attracted more than the eyes of over 40 million people. A clearly seen unidentified flying object was videotaped making its way over London's Olympic stadium.

The disc-shaped object is first seen entering the upper left portion of the video as the fireworks erupt over the stadium. The UFO -- which appears to have a dome or bulge rising from its center -- moves slowly across the sky as if deliberately observing the light-show spectacle below it.

While NBC Olympics -- a division of NBC Sports -- has chosen Goodyear blimps for all of its 2012 Olympics aerial coverage, the strange-looking object that appeared over the opening ceremonies doesn't appear to be a blimp, and also seems to stray too close to the fireworks, violating air safety regulations.

So what was it?

YOU BE THE JUDGE:

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