article_snippet: A former NASA engineer claims A former NASA engineer saw a nine-foot alien while monitoring a space mission in 1991.
article_snippet: Clark McClelland was allegedly part of a team based at the Kennedy Space Center in Cape Canaveral, Florida, when Clark McClelland spotted the extra-terrestrial humanoid.
article_snippet: a 9ft entity, Clark McClelland says, stood on two legs and approached two U.S. astronauts, that Clark McClelland would not name, for one minute and seven seconds in the space shuttle bay.
article_snippet: Clark McClelland, allegedly pictured during Clark McClelland time with NASA, claims Clark McClelland saw a nine-foot alien .
article_snippet: a 9ft entity, Clark McClelland claims in a YouTube video, was standing on two legs and interacted with two US astronauts .
article_snippet: Clark McClelland story has been hailed by supporters as the most conclusive evidence that intelligent life exists in space.
highlights_snippet: Clark McClelland was 'part of more than 800 missions with NASA'
  NASA'
   claims NASA'
   was watching one 1991 mission when NASA'
   saw a 9ft entity .
  
highlights_snippet: The 'humanoid' interacted with two US astronauts for a minute, NASA'
   says .