Medium sized reflective neon/medium green circle.

I was sitting by my window and I saw a reflective green light at my window. I checked my tv before to make sure I wasn’t crazy and that I had actually seen something. I look out and the bright neon green ball flys across my window for a short distance and then it began to fly lower as it disappeared out of thin air right before my eyes. It wasn’t going fast enough for me to only catch a glimpse. But it was so sudden that I couldn’t take any pictures or photos. Since I’ve never seen anything like that before. I know it wasn’t a drone or anything like that because people don’t usually do that in our neighborhood. It was close enough to my window but I could not see inside. It was so bright but not bright enough to make my room have green lighting. Just enough to see it. It was maybe a few feet above the house next to me to the right and it flew down towards a yard our by the creek that’s located in the back of our house. I’ve never seen anything like that before and I 100% believe it was something other than a human. It wasn’t alive but it was like it was being driven and then it kind of “crash landed” in a sense.