A huge ball of light was filmed flying over a residential area of Moscow this week and has left UFO hunters curious after the video was uploaded to YouTube.
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The mysterious light is seen hovering over a block of flats in the Marfino District, RT reports.
Footage shows the glowing object approaching the houses before it flies out of sight.
Earlier this year, UFO hunters claimed they had discovered the home of a six-inch alien in Chile's Atacama Desert.
The researchers were reviewing images taken by NASA's Spirit rover when they spotted the tiny creature's house with a "six-inch doorway".
A clip of the house was uploaded to YouTube by user Luxor2012UFO.
Scott C. Waring, editor of ufosightingsdaily.com picked up the sighting and said: "Check that NASA source...I dare you. It there, it's real, it's freaking history in the making.
"This dark doorway into this tiny home was found by Youtube user Luxor2012UFO. This is the most mind-blowing discovery I have seen all week. This doorway is about 3 inches by 6 inches. It's perfect.
"All its corners are just perfect. This is absolute 100% proof that a tiny intelligent species once lived on Mars. On the right side of the doors edge is a carving, probably the name of the family who owns the home. Please stop by Luxor2012UFO (HIT THAT LIKE BUTTON!) and give him and encouraging thumbs up. Just amazing...no other words for it."