PARIS — Alien creator Ridley Scott said on Thursday that he was convinced that they were aliens out there -- and one day they will come for us.

The veteran director said he believed in higher beings as he prepared to release the sixth episode of the sci-fi horror series, Alien: Covenant, next month.

"I believe in superior beings. I think it is certainly likely. An expert I was talking to at NASA said to me, ’Have you ever looked in the sky at night? You mean to tell me we are it?’ That’s ridiculous.

"The experts have now put a number on it having assessed what is out there. They say that there are between 100 and 200 entities that could be having a similar evolution to us right now.

"So when you see a big thing in the sky, run for it," he joked.

"Because they are a lot smarter than we are, and if you are stupid enough to challenge them you will be taken out in three seconds."

Alien: Covenant the second of the prequel films, is set in 2104 on board a spaceship carrying 2,000 cryogenically frozen colonists to a distant planet when they chance upon an uncharted paradise.

But their voyage soon turns into a gory nightmare that makes Alien’s original "chestbuster" scene seem tame in comparison.

’Hideous beyond belief’

The "neomorph" aliens in the new film are based on the goblin shark "which has a jaw which hinges in two ways. It’s scary, hideous beyond belief actually," Scott said.

The 79-year-old British-born director -- who was also the brains behind Blade Runner -- said he never tired or scaring people out of their skins.

"When I did the first Alien I had to get a sense of responsibility because the reaction to the kitchen ("chestbuser") scene with John Hurt was beyond anything I expected -- and it was not good," he said.

"But the film was very successful because people are perverse."

He said he could not believe the terror he had created when he went to see people watching the film. "Everybody was half underneath the seat watching by the time you get to the kitchen scene. There was a woman underneath the seat with her husband holding her. I said this is not healthy."

Scott, however, claimed that he was unshockable.

"Nothing scares me. I have a 9mm (pistol)," he said.

"If there is a problem I tend to close down into calm. When you walk in the morning on a film and 600 people turn and all look at you, that is scary," he said.

Alien: Covenant has a religious subtext, the director insisted.

He said he was "agnostic", but this did not stop him making a film about Moses, Exodus: Gods and Kings, in 2014.

"Either religion is the greatest trick played on mankind. Or it is not, and that poses some great questions, and this film is a great context for those," he said.

Scott, who was knighted in 2003, is about to make a film about the Battle of Britain during World War II, when the Royal Air Force fought off the German Luftwaffe.

Alien: Covenant opens across the world from May 10. — AFP