A former NASA engineer claimed that he saw a nine-foot tall alien on his 1991 space mission.
The UFO conspiracy theorist claimed to have been NASA's engineer for 35 years and insisted the story of super-size humanoid making contact with colleagues was true, the Mirror reported.
Clark McClelland, who said he worked with NASA as an aerospace engineer from 1958 to 1992, maintained the "truth" of his story currently doing the rounds on paranormal websites, radio stations and Youtube channels.
McClelland's story has been hailed by supporters as the most conclusive evidence that intelligent life exists in space.
McClelland claimed the U.S. government has stripped him of his pension and forced him to live on social security, despite insisting he has served on more than 800 NASA missions.