A swarm of UFOs have been caught on camera in Japan's port city of Osaka. The footage, which has been viewed almost nine thousand times, was released on a Japanese YouTube channel.
Spherical objects glowing white can be seen flying across the sky in the low-quality video and some users have speculated they are evidence of extra-terrestrial life.
The Japanese UFO sighting closely resembles a similar sighting in London, where concert-goers witnessed bright lights overhead in Hyde Park.
Osaka, Japan, where the objects were caught on camera
YouTube user Todd Johnson commented: "I know there is something out there."
The sighting in London was very brief, with the objects disappearing within seconds, making it a difficult to form a comparison.
The objects were seen during a concert and the footage was captured on a smartphone while the indie band Blur were performing.
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An explanation for these sightings that does not rely on the existence of little green men could be cloud formations.
Lenticular clouds are often mistaken for being UFO's and are usually created by gravity waves.
UFOs? Maybe They're Just...
Sky Lanterns Mistaken For UFOs(01 of27)
Chinese or sky lanterns are often misidentified as UFOs. These three were part of a large group of lanterns that was the main event of the 2013 Pingxi Sky Lantern Festival in Taiwan on Feb. 24, 2013. (credit:Getty)
More Chinese Lanterns, aka UFOs(02 of27)
These candle-lit Chinese lanterns can rise high into the sky and are often mistaken for UFOs. (credit:China Photos / Getty Images)
Kentucky UFO -- Oct. 16, 2012(03 of27)
Amateur astronomer Allen Epling captured video and images of a cylindrical object in the sky above his Virgie, Ky., home on Oct. 16, 2012. This is one of the images he took, which led many to believe the object was a high-flying solar balloon. (credit:Allen Epling / YouTube)
Manufactured UFO -- 2011(04 of27)
Pictured is a quad copter -- a deliberately manufactured UFO created by special effects wizard Marc Dantonio for a National Geographic special, "The Truth Behind: UFOs," which aired in December 2011. On the left is what the small device looks like resting on the ground, measuring 4 feet in circumference. At right, is how it appeared behind a tree in the night sky. (credit:Marc Dantonio / FX Models / YouTube)
Boomerang UFO composite images -- 10-5-12(05 of27)
This is a composite of images shot by two eyewitnesses of a boomerang-shaped UFO they reported seeing over their Burbank, Calif., home on Oct. 5, 2012. Mutual UFO Network photo/video analyst Marc Dantonio concluded the object was likely "a balloon, floating on the wind that has collapsed in half." (credit:Mutual UFO Network)
Melbourne, Australia, Feb. 2013(06 of27)
This is a composite image of how three alleged UFOs maneuvered about in the sky over Melbourne, Australia, in early February, 2013. The final verdict isn't in yet on whether they're birds, aircraft, balloons, bugs or something truly unidentified. (credit:FindingUFO / YouTube)
Exploding Weather Balloons, Not UFOs(07 of27)
On Dec. 20, 2012, a bright, circular object (pictured at the top of this composite image) was videotaped exploding in the skies above Sacramento, Calif. It wasn't immediately identified, resulting in speculation that it was either an alien spacecraft, military top secret weapon, runaway planet, North Korean satellite, among others. Within a short period of time, it became apparent that this was a weather balloon. The bottom part of this image shows such a balloon as it ascended over Tampa Bay, Fla., on July 2, 2012, and exploded in an identical manner as the Sacramento object, probably much to the dismay of all true ET believers out there. (credit:CBSNews13 / Sutor 1000 / YouTube)
Changing UFO Pattern -- Warren, Mich. 1-10-13(08 of27)
This four-image series of lights in the sky was recorded over Warren, Mich., on Jan. 10, 2013. The lights were seen changing into several patterns. The most logical explanation for these types of UFOs is a series of balloons or lanterns. (credit:LUFOS.net / YouTube)
UFOs Over Earth(09 of27)
This composite image shows four different times that alleged UFO were photographed above Earth by either space shuttles or the International Space Station. The big question is whether or not they are truly unidentified objects or if they are more likely reflections from spacecraft windows, meteors or fast-moving spacecraft-generated debris. (credit:danielofdoriaa / YouTube)
Pink UFOs Or Lens Flares?(10 of27)
What appear to be pink-red UFOs are actually lens flares from the Google Earth street view camera as it snapped images in Texas (left) and New Mexico (right). (credit:© 2012 Google)
Lens flares Arizona(11 of27)
These two flying saucer-shaped, pink-colored lens flares were created by the Google Maps camera as it drove through locations in Sedona, Ariz. (left) and Flagstaff, Ariz. (right). The images were snapped in April 2009. Submitted to HuffPost by trenna. (credit:© 2012 Google)
Lens flare Whiteriver, Ariz.(12 of27)
This skybound lens flare was created by a Google Maps camera in June 2008 over Whiteriver, Ariz. Submitted to Huffington Post by Cheryl Weeks. (credit:© 2012 Google)
Lens flare Gulfport, Miss. (13 of27)
This very Earthbound lens flare was created by a Google Maps camera in November 2007 at Gulfport, Miss. Submitted to Huffington Post by Jenni Parker. (credit:© 2012 Google)
Lens flare Eureka Springs, Ark.(14 of27)
This seemingly grounded lens flare was created by a Google Maps camera in January 2008 at Eureka Springs, Ark. Submitted to Huffington Post by SE. (credit:© 2012 Google)
Lens flare Escanaba, Mich.(15 of27)
This lens flare appears to be following a car. The Google Maps image was created in October 2008 at Escanaba, Mich. Submitted to Huffington Post by Mary Robinson. (credit:© 2012 Google)
Cincinnati Skydivers NOT UFOs Sept. 28, 2012(16 of27)
On the night of Sept. 28, 2012, a group of strange-looking lights appeared in the sky near Cincinnati, Ohio. First there was one, then, two, then three lights, slowly descending. It turns out, however, that these lights were originating from a group of skydivers performing a pyrotechnics jump at the La Salle High School homecoming event. (credit:Galuyasdi / YouTube)
Weather Phenomenon(17 of27)
Some UFO sightings may be due to a natural phenomenon known as sprites, like this one shown from 2006. "Lightning from [a] thunderstorm excites the electric field above, producing a flash of light called a sprite," said geophysicist Colin Price. (credit:ILAN Science Team / Space.com)
Clouds(18 of27)
Clouds: Saucer-shaped or "lenticular" clouds that form at high altitudes have been confused with UFOs. (credit:Getty Images)
Blimps or Advertising Balloons(19 of27)
Blimps or advertising balloons: These can look like flying saucers from some angles, especially at night. (credit:Lars Baron, Bongarts / Getty Images)
Sunken Ship in the Baltic Sea(20 of27)
On June 19th the Swedish-based diving company Ocean Explorer discovered something they've never quite seen before. They were exploring in the Baltic Sea between Sweden and Finland looking for sunken treasures when a very unusual image suddenly appeared on the sonar. A 197 feet diameter cylinder shaped object was discovered at the depth of approximately 275 feet which resembles the Millennium Falcon from the movie Star Wars. (credit:www.oceanexplorer.se / Everett Collection)
Baltic Sea UFO 1(21 of27)
An image released on June 15, 2012, shows a close-up view of the unidentified object sitting on the bottom of the Baltic Sea. (credit:Expressen.se / YouTube)
Baltic Sea UFO 2(22 of27)
Close-up of rock bed that forms the Baltic Sea UFO, which still mystifies researchers. (credit:Expressen.se / YouTube)
Baltic Sea UFO 3(23 of27)
One of several odd stone circle formations, sitting on top of the unidentified object at the bottom of the Baltic Sea. (credit:Expressen.se / YouTube)
Antarctic UFO -- Aug. 10, 2012(24 of27)
A circular UFO hovers above the Neumayer-Station III research facility in Antarctica on Aug. 10, 2012. Theories ranging from a simple weather balloon to a more elaborate ship from another planet have run the Internet gamut. The next slide shows a closeup of the object. (credit:myunhauzen74 / YouTube)
Antarctic UFO Closeup -- Aug. 10, 2012(25 of27)
This is a closeup of the UFO from the previous slide. No official explanation has been offered about the object. (credit:myunhauzen74 / YouTube)
Meteors(26 of27)
Meteors: Space debris can create a spectacular light show when it burns through the Earth's atmosphere, and sometimes reported as UFOs. (credit:Ethan Miller, Getty Images)
Civilian or Military Aircraft(27 of27)
Civilian or military aircraft: Planes can look mysterious at night or in certain light conditions, thus confusing an observer. (credit:Sean Cole, US Navy / Getty Images)