Aliens caught on camera attacking an International Space Station

The clip shows a bizarre rotating circular object hovering in space near to the artificial satellite. 

This extraordinary video shows the "monumental" moment a UFO approaches the International Space Station.

The three minute, 40m second clip, uploaded to YouTube, shows a bizarre rotating circular object in close proximity to the artificial satellite.

The video, made in March 2014 and headlined Giant UFO approaches International Space Station (ISS), was uploaded by a user known as secureteam10.

To date, it has been viewed more than 533,000 times.

The blurb accompanying the clip reads: "The video was recorded directly off of the ISS Ustream video page by a regular user of the site who regularly watches the streaming live video for daily anomalies and happenings.

"This is monumental in the search for proof of an alien presence."

More than 600 YouTube users have commented on the video.

A convinced Travis Gullickson wrote: "Amazing capture on this footage!!

"Most certainly a curious UFO coming to check out the ISS... Anybody who disagrees is foolish!!"

Another user, going by the name "Ellie Goulding," said: "Damn... yooooo... we are not alone are we?"

And Ric Downing gushed: "Very interesting footage! Thanks for the post!"

Others were more skeptical however.

Michael Baumann Jr asked: "Do people actually believe this is real? Lmao."

Gregory Dearth declared: "That's the dumbest one I have seen."

And Gregory Faust sighed: "This is definitely not anything physical.

"It's just something with the camera.

"Some people will believe anything.

"I don't even know why I subscribe to this channel."