Unexplained Objects That I Witnessed In Front Of The Moon; The Time I Witnessed UFOs

Whether or not you think that UFOs are extraterrestrial or not, this is an honest account of something that I have witnessed. It started about 2011 on the 5th of July, at right around 10:50 pm. The moon was in a phase which was about 75 percent full, and was about 40 degrees up in the sky. First came one object. The first object was a very unusual shape made up of straight edges but it was not nearly symmetric. It filled up about a one hundred and twentieth of the moon. It took about 15 seconds or less to pass across the moon. It was truly compelling. Once it reached, or passed, in front of the edge of the moon which was in shadow, it seemed to literally disappear into blackness against the dark sky, which was somewhat full of light pollution. And as it disappeared, I could see the object give off an explosion of sparks, literally exactly just like a firework. This was not however a firework, for it was far too high in the sky. I could tell that it was probably far higher in the sky than any plane that you usually see. Then, about two minutes later, the same kind of object came by the moon, in about the same trajectory. Then the same exact thing happened and I could see sparks slowly being given off. It was truly surreal to witness. I didn't record it, although I could see much more detail with my own vision than what a camera could capture, at least using our current technology.