NASA has said this disc-shaped object orbiting an asteroid very near Earth is nothing but a small moon.
But UFO enthusiasts have accused the space agency of lying and have insisted the UFO is actually a space ship.
In this video, Tyler of Secureteam10 , explains why he thinks the object spotted on asteroid 2004 BL86 when it passed 199,600 km from Earth on 26 January 2015 is not as it seems.
He says the object, which is 70 metres in diameter does not look like your typical moon.
Instead he insists it has a long, metallic cylindrical hull and two other smaller cylinders that look like arms sticking out the side.
He said this was not "conclusive proof" of it being a space ship as the pictures were grainy, but he was pretty certain it was of alien origin.
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Tyler said if NASA were to find better footage of the UFO that revealed it was indeed a space ship the space agency would doctor it so it looked like a moon.
Some YouTube users praised his findings, with one saying: "Hi Tyler. Great job. We all need to remember to keep our critical eye and common sense in the game when dealing with any info from NASA.
"You are therefore quite right to suspect that this is something other than a moon. I am completely with you on this one."
Another wrote: "Awesome footage! Most already know... NASA seems to stand for Never A Straight Answer. I am so tired of the veil over our heads by so-called authorities."
But others argue that Tyler was simply making things up.
Read more : "Meteor" caught on camera zooming through the sky in mobile phone footage
One wrote: "Almost close to every Asteroid ever discovered have always been in a disc/oval/circle like shape object. Just look at the Asteroid belt, and tell me, do you see a flat disc circle like object anywhere?"
Another added: "Alright now. This HAS to be a complete joke. There is no way you are seriously trying to convince anyone that the small object that moves in from the top of the frame is none other than the asteroid's satellite.
"Satellite meaning MOON. This object has been monitored by HUNDREDS of professional astronomers as well as THOUSANDS upon thousands of amateur astronomers."
"EVERYTHING nasa releases information wise IS analyzed by dozens of NON government agencies, including those who are SERIOUSLY looking for evidence of alien life," the post continued.
"Out of the 20,000 some odd individuals, how is it that no one else, LITERALLY no one else, is claiming what this page is claiming? Because it is a moon.
"The two facilities that discovered the satellite have NO connection with nasa, and is operated by astronomers who are NOT nasa employees, nor do they rely on nasa for their information."
http://www.mirror.co.uk/news/weird-news/could-nasa-lying-huge-ufo-7348184