Technical reason for a glowy orb

I took this photo, and there is that weird glowy thing. I am not trying to claim that it is a ghost or any such thing, I am actually hoping some of you are experienced enough in looking at pics like this that you can tell me what technical issue could have caused it. I know that "glowy orbs" are often taken to be ghosts, but there has to be some non-ghost reason for these things.

Oops, forgot the photo.
i8.photobucket.com...

[edit on 3-2-2007 by Illusionsaregrander]

Neat! Thanks for uploading it and presenting it to us.

Here's a nice little page that discsuses them
theshadowlands.net...

I allways have to question though, why would film, or a digital sensor, be magically more sensitive than the human eye, infact, film is less able to deal with extremes of light and dark than the eye.

Thank you Nygdan. That was helpful. It was a digital camera, and as you noted, it was not visible to the naked eye, I was actually photographing the little shelter in the woods because I thought it looked a little creepy.

One last thing since you were so helpful on the other. Same digital camera, different location. There is a mist over my friend Jill in both of these photos but not over her daughter in the one of them together. Any ideas?

i8.photobucket.com...

i8.photobucket.com...

Nydgan, film and sensor have a wider wavelength bandwidth than the human eye.