A ' UFO enthusiast' believes they have found evidence of an alien spacecraft hovering over Earth in an old NASA photo.
YouTube star Tyler, who goes by the name "secureteam10", spotted the black triangular craft that he believes was photographed by mistake.
As the Daily Star reports, the photo was taken in the 1960s when three crew members were sent to orbit to perform an engineering test of the first crewed lunar module.
During the mission, they took photos of the crew member doing a spacewalk, and in the background of the image is what Tyler believes to be a UFO.
What do you think of Tyler's sighting? Let us know in the comments...
On his YouTube channel, Tyler said: "This is a photo snapped by one of the astronauts doing space walks before coming safely back down to Earth.
"In one of the photos, they took thousands and thousands of miles away from Earth, a dark triangular craft seen above Earth in shuttle missions that happened many decades later.
"This was discovered to be lurking among these clouds – all the way back in the 60s when this photo was taken."
He zooms into the picture, showing a black dot among the clouds lurking in the background.
He continued: "It's still hard to see but when we go all the way in, we get yet another dark triangle UFO, seems to be at an angle as if it's flying right above the clouds, right at the line where the Earth atmosphere meets space.
"Almost like it's orbiting the Earth along with the astronauts who's likely when snapping this photo had no idea that this mysterious black, triangular was."
His fans were convinced that the photo was a "solid proof" of the existence of UFOs.
One said: "Incredible! That photo taken from space all those years back catching that triangle is solid proof for me."
Another shared: "I saw a triangle flying a few months ago, but it was going flat side first not the point."
"Is there a chance that the astronaut photo could be space debris or something? This stuff fascinates me beyond belief!" a third asked.
The image bears a similarity to the infamous Black Knight UFO. Believers in the conspiracy claim the ominous dark shape of an alien origin is orbiting Earth.
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