If you saw this over your head, what would you think? Aliens have come to kick our asses? God has come to kick our asses? Apparently, the bizarre cloud formation seen in Moscow recently is just a natural phenomenon.

Talking to the Daily Mail, a spokesman from Moscow's weather forecasting service said: "Several fronts have been passing through Moscow recently, there was an intrusion of the Arctic air too, the sun was shining from the west – this is how the effect was produced.

"This is purely an optical effect, although it does look impressive," he added.

Ok, so it's just clouds—but when you watch the video you still expect an alien ship to drop through that hole with lasers blazing. [Telegraph]