Description

Hello, i took this photo today in Czech republic, it was on the sky on same spot without moving around 10 minutes. Could somebody tell me what is this technology? I tried to find it, if it is some type of dron or balloon, but did not find anything like this. It also lights green, it was far away, so quality is not good, but maybe somebody will recognize shape of the object and could tell me what it is. Thank you.