UFO recorded by NASA's Deep Impact spaceraft, scouting the comet ISON (WATCH IN FULL SCREEN).

Video published on NASA database in Feb. 5, showing an UFO scouting the comet ISON. The object is definitely intelligently-controlled and changes its speed and path. Original video is extremely grainy but it's possible to see the UFO. Watch it in full screen. This series of images of comet C/2012 S1 (ISON) was taken by the Medium-Resolution Imager of NASA's Deep Impact spacecraft over a 36-hour period on Jan. 17 and 18, 2013.http://www.jpl.nasa.gov/video/