The black smoke ring in the English sky spread rumors about UFO invasion

The appearance of a black smoke ring in the sky made many believe this was a sign of an alien invasion.

When driving with his boyfriend through the area near Birkenshaw village, West Yorkshire, England on the afternoon of July 9, Kimberley Robinson , 22, saw a black circle floating in the sky, the Daily Star reported on July 13.

"It looks a bit like smoke but has a round shape , " Robinson recalls. "We have never seen anything like that." This black circle looked like a giant smoke ring, but the West Yorkshire County Fire Department said there was no fire notice in the area at that time.

Mysterious black circle image in the sky.

The same phenomenon happened in Missouri, USA on July 8 or Novosibirsk, central Russia in April. Russian meteorological experts confirmed that the phenomenon was not related to the weather while Missouri police gave That this is the product of fireworks.

The fact that many mysterious black circles appear in the sky all over the world sparked rumors related to the alien invasion . "This is like some terrifying premonition," the witness named Marina said . "Aliens are coming to us. It's scary," the user of the social network named Andrey Ivanov commented.

However, experts have another explanation for this phenomenon. " Whirling smoke may happen by chance or purposely when a wind blows smoke through a circular structure like a chimney," said Nick Pope, who investigated an unidentified flying object (UFO ) and other mysteries for the US Department of Defense, explaining. "If it is intentional, it could be the result of festive fireworks."

Black circle appeared in Windsor, Berkshire, England.(Video: YouTube).

Nigel Watson, a UK UFO expert, thinks that the black circle near Birkenshaw involves annual events in the area."This phenomenon formed during cannon fights that recreated the history in Yorkshire."

In a video posted in 2008, a group of American men used homemade equipment to create dark smoke rings in the festival during the black desert desert, Nevada state. These circles are shaped similar to the ones discovered last time.