Blinking light made a zig-zag motion in a split second while flashing a very bright light and went straight up.I was getting ready for school when I decided to observe the sky. It was still dark. A few minutes into my observation, a strange light caught my eye. It was blinking at about 1 blink every 2 seconds. After a few seconds, the UFO made a very quick flash and it went in a zig-zag manner. It's very hard to explain. The craft zig-zags while emitting a very bright flash(split second). Then it went straight up as the craft's lights became dimmer. After a few seconds, I saw a satellite so I know that the object I saw before was NOT a satellite. The object was not travelling at constant speed unlike the satellite.