Space shuttle or UFO is a true legend told by generations. It has been a hot topic whenever unexplained thingy flies in the skies. Not bird, not aeroplane, but just unexplained object. Shaped in triangle and flew up and down in the space, this video will show the latest evidence of unexplained flying object (UFO). This video was filmed by NASA Discovery STS-133. Just watch the video and you will be surprised!