STS-37 UFO
"During the STS-37 flight on April 1991, the shuttle while on the day side
of earth, there appeared a round UFO outside the viewing window. As it
arrives on the scene, the shuttle rocks back and forth as if the UFO's
magnetic field affects the shuttle. The UFO flies left to right, changes
course to left and then hovers for about 30 seconds like it was observing
the shuttle then bobbles a little bit for a couple of seconds. Then the
action is repeated in closeup mode."
http://www.youtube.com/watch?v=Kqe7OoMpgkc
