Originally published on Aug 31, 2013 by BEST UFO 2013
Rio de Janeiro, Brazil July, 2013.
(UFO Casebook's Note: Here we have another interesting photo/video of an unknown object filmed from the window of an airplane. This one occurred in Rio de Janeiro in July of this year.
No information is provided by the submitter, which to me is always suspect, but if this is real, it is a very good quality shot of the unknown object.
The object appears to be a classic, disc-shaped UFO with a dark spot underneath. Check this one out, and let us know what you think. Fake or the real thing?)