Jon Austin*GETTYConspiracy theorist Marcus Allen (pictured) told symposium the moon landings were faked.
The 50th anniversary of Neil Armstrong's first steps on the lunar surface took place last month, but many conspiracy theorists across the globe remain convinced it was the biggest cover up of all time.
Moon hoax conspiracy theorists say a desperate President John F Kennedy, who wanted to beat the Russians in the space race to the moon, ordered the production of a series of films in top-secret studios to make it look like Nasa astronauts made it to the lunar surface.
At the heart of the theory are claims that the radioactive Van Allen belt around Earth would have been lethal to fly through.
One of the top moon hoax conspiracy theorists is Marcus Allen, the publisher of alternative news bi-monthly magazine Nexus, which is sold in around 100 countries.
Jon AustinMoon hoax believer Marcus Allen made the claims during a panel debate at the Glastonbury Symposium.
Taking part in a speakers' panel at the 27th annual Glastonbury Symposium, an annual conference dedicated to the paranormal, conspiracy theories, alternative thought, and new age philosophies, Mr Allen said: "I don't believe man landed on the moon. If Nasa or anyone else can prove it, I am waiting to hear, because I can't work it out.
"It is the 50th anniversary apparently, but how did they do it?
"If it was so easy in the 1960s, surely they could do it any day now, and so could Russia, Japan, India, even North Korea."
Mr Allen went on to suggest that Nasa has since admitted - in a round about way - that it is not really possible for space travel beyond the Van Allen belt.
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Astronaut Neil Armstrong taking his ‘small step for man’ from Apollo 11
He said: "It wasn't easy, there are so many difficulties to be overcome.
"Nasa admitted this since in not so many words. If you read Nasa's technological information they say we have real problems, they just don't say they had a problem at the time."
Nasa is next planning to send astronauts to Mars in the next 30 years or so, but Mr Allen rubbished the proposal.
He said: "They are now talking about going to Mars. It is ridiculous because anyone who tried flying to Mars would be dead in three weeks."
Mr Allen has given many TV interviews over the years on the reasons for his beliefs.
He has often said he watched the landings live on TV and wanted to believe it happened, but since evidence that proved it didn't happen came