A round green/orange light that was stationary than sped off quickly and disappeared without a sound.I was coming in from outside looking up at the stars. I glanced over to the western horizon and saw a very bright light. At first I thought it was a planet and was going to go get my binocculars to look at it, but it seemed even to bright for a planet. As I watched it for about 30 seconds it began to moved to the Northwest and very quickly became smaller and smaller until it was not seen anymore. It was gone in about 10 seconds. Why I do not think it was an airplane is simple. It was too bright of a light, non flashing, It was stationary for about 30 seconds and moved very, very fast until it disappeared and in a very short frame. It wasnt just that I lost sight in the horizon. It was a very clear night, no clouds. I am reporting this in hopes that I may not have been the only one to have seen it.