The footage, slowed down for greater effect, was posted by “Section 51”, a US-based YouTube channel that collects footage of “unidentified flying objects”.
It shows a fighter jet following a US fighter jet as it prepares to land, while a triangular object is clearly seen near a Navy helicopter.
Commenting on the video, many people believed the object was a TR-3B, a supposed anti-gravity spy vehicle that some claim is being developed by the US Air Force.
One surprised YouTube user wrote: “TR-3B. They really do exist!”
Another offered a detailed explanation, writing: “I believe it is a TR-3B, the latest black project vehicle from the United States.
“This is the next generation of secret technology developed by Skunk Works and other secret development programs.
“Either way, it is not of alien origin. It could have been developed using reverse-engineered alien technology. But built on this planet.”
Others weren’t so convinced, like user Jim Hatch, who wrote: “I’m pretty sure they wouldn’t leave it parked on the deck of an aircraft carrier. Was it an alien ship or some sort of secret technology?”
And others have suggested the object was added to the footage with Photoshop, joking about the triangular craft’s “stealthy shadow”.
One said: “Nice CGI.”
Another skeptic said: “So explain to me why a ship that can defy gravity and travel faster than anything known to mankind, that uses no fossil fuel, is on the deck of an aircraft carrier?”
But there were some who didn’t know what to think.
Matt Simon said: “The problem with CGI today is that it’s almost impossible to tell what’s real and what’s fake.
“Unless you’re there to witness it with your own eyes, when you watch a compelling video and wonder if it’s real or fake, sometimes all you can do is shake your head and shrug your shoulders.”
Finally, ufoofinterest.org, which claims to “debunk hoaxes, conspiracies and misinformation,” has debunked UFO claims.
The group tweeted a video showing original footage of US Navy training with no UFOs in sight, proving it had been manipulated.
They said: “Was a triangle-shaped UFO spotted on a US aircraft carrier in the Mediterranean Sea?
“It is interesting to see what sources rumormonger and CGI artist SECTION 51 used to fabricate his latest video.
“Here’s a source without that fake UFO.”
