I combined the photo that was taken during and after the UFO and it is below in giff format. The photo before the UFO was of a different angle so I didn't include it. The photos prove that its not something stuck to the window, the shadows on the UFO show it is an object far away.
Date of discovery: unknown
Location of discovery: Earths orbit
Old NASA files hide UFO research treasure if you dig deep enough and persist. This is a great example of that very thing. A giant odd shaped UFO is in the background. The shape indicates that its biomechanics in nature. I mean its created using living mechanisms that are programmed to grow a certain way. Much how the ship in the Sci-fi show Farscape had a living spaceship, this too is similar except this one is real. I think biomechanics ships explains a lot of sightings people have of odd shaped or irregular shaped UFOs. SCW
UFO In NASA Photo: http://eol.jsc.nasa.gov/sseop/images/ESC/large/ISS006/ISS006-E-51230_2.JPG
No UFO in Next Photo: http://eol.jsc.nasa.gov/sseop/images/ESC/large/ISS006/ISS006-E-51231_2.JPG