NASA's Unexplained Files
Season 1 • Episode 4: Black Knight Rises • Watch with subtitles
Episode 4: Black Knight Rises
March 11, 2014 • 44 min
A chunk of the sun appears to have vanished. An ominous dark craft beneath the Space Shuttle Endeavour. Hubble spots thousands of unidentified objects traveling faster than light. Are we being watched?
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