It is said to be an orb caught on camera at the conference.
There are quite a few pictures of these orbs floating around in the ufo scene. I don't know what to make of them myself.
Just to play the cynic a little, I can say with 100% certainly the orbs would be incredibly easy to photoshop in. This doesn't mean they are, I would have to know someone personally who snapped a pic of one, or snap a pic of one myself before I fully believe in them however.
Also, what makes cameras able to see things that our eyes can't? The standard cameras see in the same spectrum range as our eyes do. Maybe it's the flash that lightens them up for that split second? If anyone has information on why a camera would pick these up when our eyes can't, I would like to read it.
If they are real its pretty interesting though, especially the way they appear to be quite intricate in design, like a sort of mandala.
hmm I say!