Stanton Friedman, a nuclear physicist, who worked on classified projects for for US defence contractors across 14 years in the 1950s and 1960s, believes the truth about a global cover up over the existence of aliens will soon be exposed, and it will have a positive effect on the world.
Mr Friedman, who has investigated the UFO mystery for more than 50 years and was the first civilian investigator of the infamous 1947 Roswell UFO crash unsolved case, revealed his thoughts in a new book compiled by author Miguel Mendonca.
The book, called We Are the Disclosure – Part I, tells the stories of a string of campaigners fighting for an alleged “truth embargo” on the existence of aliens to be lifted.
Mr Friedman, although never witnessing a UFO himself, said he was convinced we are not alone.
He said: “There’s an enormous amount of evidence from all over the world from respectable, responsible individuals whose testimony you’d accept about anything else.
“We’re not alone and that bothers the heck out of some people, some religious people.
“Some of the fundamentalists have explained that the only place in the universe where there are thinking, communicating people is right here on Earth, and that this UFO stuff is the work of the devil.
“And that the Earth was created in 4004 BC.
“Sorry guys all those things are wrong.”
He said the subject had been surprised through ridicule by agencies such as the CIA.
He said: “(This) was established by the Robertson Panel report done for the CIA back in 1953.
“They recommended the use of all the tools of propaganda, including Walt Disney and so forth, to persuade people that aliens are not visiting.
“So there has been a concentrated effort on that.”
But he believes although the authorities have tried to suppress the subject, more people are starting to break rank and talk.
He added: “I’ve certainly seen some evidence of more people being willing to talk – maybe because they are getting older, maybe because they watch television and recognise that they have friends who have had sightings.”
He said an organisation called the National Aviation Reporting Center on Anomalous Phenomena (NARCAP) also allowed pilots, who are fearful of losing their jobs if they go on record about UFOs, meant they could now anonymously log details of their sightings.
Mr Friedman added: “They’ve collected thousands of reports, and many of them we probably wouldn’t have known about, as pilots have to worry about losing their jobs.
“I’m an optimist, I see things changing.
“I see people being much more willing to hold their heads up.”
Conspiracy theorists claim the US Government is aware aliens have visited Earth, but have put in place a “truth embargo” to prevent it getting out to the public.
Disclosure activists, such as Steve Bassett, head of Paradigm Research Group, campaign for the embargo to be lifted.
Earlier this month Express.co.uk revealed how Mr Bassett believes that disclosure could be imminent after the CIA put thousands of formerly classified files, including stuff on UFOs, on its website.