I was standing on my porch with a friend when we both witnessed a bright extremely brilliant light in the sky moving at the same pace as a commercial airliner. This light did not blink or flicker like a star and moved too slow to be a meteor or falling object from orbit. It continued on a steady flight path across our field of vision in the night sky and its path was actually crossed by an unmistakable commercial airliner which we used to judge objects size and speed with. The light appeared to be bigger than the plane and moving at a similar speed as the plane. Shortly after the plane crossed behind object, the light slowed to a halt and dimmed away as if it was on a dimmer switch