http://www.cohenufo.org/unsolved.html#aldrinapollo11 See in particular the videos on page two. It is claimed that this case is not resolved. I was aware of the story but never saw the video or the specific claims made by Aldrin, which can be seen on the show cited: "First on the Moon: The untold story". It aired today on the Science channel. Perhaps this has been explained since the show first aired last year? Edit: I just noticed in the video linked that they say "an object filmed...like this one filmed on a later mission". That complicates things a bit.