A spectacular fleet of balls of light hovering over the city of Astana, capital of Kazakhstan on the evening of June 20, 2014. Witnesses, having spotted the mysterious lights, they were able to document the event.
In the down below footage you can watch hundreds of spheres, at a very high altitude, arranged in a cluster of lights flying towards the sky as if they were one single body. In fact, the spheres chasing each other, sometimes letting out slight flashes of light.
Surely they are not Chinese lanterns or balloons, due to the dynamics of flight absolutely abnormal.