UFO Sighting in League City, Texas on June 9th 2015 – Very bright and glowng white, shape moving up and down

My son and I were walking outside around 9:30 p.m. on June 9, 2015 in League City. I looked up at the sky and asked him if that was the North Star, he said no. I said omg, that looks like a UFO. I went back in the house and got my binocs and we both looked at it in amazement. I have never seen anything like it. It was bouncing around and it seemed to emit something from the sides and the bottom. My neighbor was in his garage and we called him over to take a look. He agreed that it must be a UFO. He has never seen anything like it either. I called the local police to see if anyone else reported something strange in the sky. They said no. I told them they need to go an look. I had two police officers come to my house and looked through the binocs and were as awe-struck as we were. They agreed it was something out of the norm. My son and I were very upset by what we saw and could not get any answers as to what it was. I have never seen anything like it. My son video taped it and also took pictures. We lost sight of it as it descended in the sky beyond the tree line. My son took the attached pictures. I believe he has a video as well. As far as Time Zone, we are on the Gulf Coast.