This amazing video shows ten incredibly bright spheres lighting up the daytime sky in the middle of Japanese city Osaka.

The ten lights seem to dance around from one side of the skyline to the other in the video that lasts more than two minutes.

It's been posted by a number of Japanese TV channels and has now been viewed by nearly 180,000 people wondering what the lights could possibly be.

In the description, it says that the balls are 'quick moving' and 'dance around'.

It also claims that what was spotted was similar to a sighting above London's Hyde Park in June.

Close encounter: Ten lights seem to dance around from one side of the skyline to the other in the video that lasts more than two minutes

Popular notion: It's been posted by a number of Japanese TV channels and has now been viewed by nearly 180,000 people wondering what the lights could possibly be

Close up: In the description, it says that the balls are 'quick moving' and 'dance around'

But while the lights looked similar, they lasted just a few seconds during the June sighting, which makes the comparison difficult.

The shapes in the distance stay bright throughout the video in Osaka, but it is impossible to see anything more than round lights from where it is shot.

It's led to speculation over what the lights could be, with some conspiracy theorists suggesting they are a sign of alien life.

Some people have commented that they may be UFOs (unidentified flying objects).

Others are sceptical about the film, even suggesting it's a hoax, with one asking why such videos are always shot on '90s cameras' - a comment on the quality of the footage.

Another wrote: 'The acronym "UFO" means "Unidentified Flying Object", and that's exactly what it means. It is not a synonym for "alien spaceship".

'All it means is that one couldn't identify precisely what it was. You can speculate all you want about it, but there are thousands of things that any UFO is more likely to be than an artifact made by intelligent beings from outside our planet.'