UFO Captured in London Sky Through Plane Window [Video]

Handout of technicians working on the heat shield of NASA's Orion space capsule at Kennedy Space Center in Florida — Technicians work on the heat shield of NASA's Orion space capsule at Kennedy Space Center, Florida, in this undated handout photo provided by NASA May 30, 2014. Measuring 16.5 feet in diameter, the heat shield is made from a single seamless piece of Avcoat ablator. According to NASA, it will be tested on Orion�s first flight in December 2014 as it protects the spacecraft from temperatures reaching 4000 degrees Fahrenheit. The uncrewed flight, dubbed Exploration Flight Test-1(EFT-1), will test the spacecraft for eventual missions that will send astronauts to an asteroid and eventually Mars. EFT-1 will launch an uncrewed Orion capsule 3,600 miles into space for a four-hour mission to test several of its most critical systems. After making two orbits, Orion will return to Earth at almost 20,000 miles per hour, before its parachutes slow it down for a landing in the Pacific Ocean. REUTERS/NASA/Handout via Reute

This may well be considered as one of the most convincing UFO videos in recent times. While there are always people who do not believe in the existence of UFOs, there are numerous others who believe in it. The most recent video, as captured by a passenger in a plane, may give chills to the spines of the believers.

The video shows an object flying over the clouds above London, The Mirror reported. A passenger shoots it through the window of the plane. A dark-coloured flying object with blue lights on both the sides is seen floating in the air. According to the YouTube video uploaded by "UFOvni2012," the incident took place during the morning hours on May 25, 2014. The video has been watched more than 100,000 times, when last checked.

Some users like devwreck127 seem quite convinced about the video. "In just a few years, phone camera resolution will probably be at least double what they are now, and so on every few years after. I think we're finally just a few years away from real high res images of UFOs to start showing up all the time from around the planet.," the user wrote. Another user "Wayne McCabe" called it a "Cool intro and good video."

There are several other users, on the contrary, did not find it convincing at all. Many of them thought it was a drone. Several others thought it was the top of a building while some others believed it was a gas balloon. "That is obviously swamp gas or a weather balloon... and if it is indeed an unidentified flying object - then, it would be an experimental aircraft or some sort or another," Larry Winfrey wrote. "If you look close you'll see that it's just swamp gas from a weather balloon was trapped in a thermal pocket and reflected the light from Venus," eaglecroft wrote.

The debate continued on YouTube. "Disclosure will never be a viable possibility if we keep flooding the collective conscious with all these false sightings. This is clearly something on the window. If you'll be even the slightest bit observant you'll notice that the "UFO" is in the same place on the glass in every image. It only looks like it's moving because of the change in camera angle. It appears to move right as the camera moves left, and appears to move up as the camera moves down," "thBarkingSpider" sums it up.