A footage showing UFO zooming past the supermoon sparked fears that aliens could have visited Earth. The video, posted to YouTube, triggered a debate about the existence of alien spaceships.

A disc-shaped object can be seen flying across the stunning moon in the footage posted by channel FindingUFO.

David McCarty, based in the US, said: "The November 2016 Beaver moon supermoon was the largest supermoon since 1948.

"I thought this would be a special thing to film but when I was reviewing the video in full screen I noticed something even more impressive.

"I had caught a UFO passing in front of the supermoon! Watch carefully at about 00:51 for it to pass along the bottom of the lunar disc."

Alien theorists believed that the video points at the existence of the extraterrestrials living on moon.

In close up, the UFO is visible over the super moon surface.

Kaun Australis said: "Amazing clip! It is a phenomenon seen anytime you look at the Moon's edge".

"Never seen anything like it! There's a lot of footage of objects leaving the moon, as more people get better telescopes it's being observed more often".

One astronaut said: "I'm having these light flashes".

"This is unusual as a UFO in orbit that possesses a haze mist around it", said Waring, as reported by Express. "Most likely identification - bird".

Gary McKinnon, a former hacker, who has been convicted for hacking into NASA and U.S. military-related data, joined the debate too.

According to Nature World News, YouTube channel had a video which showed that an unidentified flying saucer was seen passing by the Supermoon in the Arizona sky. Given their shapes and sizes, the YouTuber concluded that they could not be anything else but large alien vessels orbiting around Earth's natural satellite.