A halo-like cloud over Moscow has been caught on camera, exciting UFO watchers.
The glowing ring was spotted over the city and was filmed by stunned locals.
UFO experts have described it as 'a true mystery,' while scores of others believe it could be an 'alien mothership.'
Nick Pope, a former UFO analyst, says the halo has everyone puzzled.
'I've never seen anything like this,' he said.
'It's a true mystery.'
'Whatever it is, it's one of the most beautiful and spectacular things I've ever seen.'
It has also atrracted plenty of interest and speculation online.
But meteorologists say there's nothing supernatural about it.
They say it's just the setting sun coming through clouds after a storm.


