It was a round object pulsating green light all over it. It was there and then suddenly vanished.I was on vacation in Iran we were driving at night in the desert on the way to Shiraz. My father's wife was driving the car, my dad was sitting in the back. I was in the passenger seat talking to the driver. Suddenly she started to studder and point out the window, my dad started to studder. I looked out the window there was a circle it was green and pulsating. At first I could not believe it, I thought it was a helicopter but then I realized it was not. The sky was black and I could see it well. It was on an angle of descent and then it suddenly disapearded. My Dad's wife started talking she yelled out "DID YOU SEE THAT" and my dad said "I did, I did" I just sat silently.((NUFORC Note: Date is approximate. PD))