Happened to go outside, and look up. It just appeared, then started to descend, with a sharp descant then gradually went to level flight. There was no sound, like you would hear with the descent of a jet or helicopter. The object appeared to be triangular in shape with 3 white lights that appeared to grow, possibly from the descent of the unknown craft. The entire episode lasted approximately 12 to 14 min. I had thought about getting my cellphone to take a picture, but found myself to mesmerized. That is about all I remember of the event.