In early 2008, I spent a weekend at Contactee George Van Tassel’s Integratron – where I was lecturing on the subject of how and why the FBI of the 1950s was so concerned by, and interested in, the cosmic-claims of Van Tassel and fellow Space-Brother champion, George Adamski.
While at the Integratron, I took a number of photographs in its upper-chamber, several of which displayed clear and graphic imagery of countless, small floating balls of light.
In research circles, such small illuminated spheres, captured on-film, have become known as Orbs.
Of course, the phenomenon has both its supporters and those who maintain that the entire issue can be explained away in wholly down-to-earth terms (see this link, which outlines both points of view).
My view? I dunno. But for what it's worth, the photos exist, and that's one of them above!