UFO Filmed From Plane Over Tokyo (Video)

Another silver orb UFO was filmed from a plane flying over Tokyo. What is it?

The video, posted to YouTube, shows the view out of a passenger jet's cabin window with a turbine engine clearly visible outside.

As the passenger filmed the Tokyo skyline, a silver orb object flies past. The unidentified flying object caught on tape flies in a straight line and it's much too high to be a bird.

This particular UFO is of the silver orb variety which has been spotted all over the world and is the kind which has been caught on video from airplanes several times in the past few months.

The object doesn't look like any known jet, plane or helicopter and it isn't behaving like a weather balloon.

So what is it?

Here's the video: