Large foggy object

We were sitting on back porch the object approached from the west moving east. It appeared like a plane with landing lights flying in cloudy or foggy sky but the sky was clear I stayed out afterwards and all planes that flew a similar area were clear and lights could be made out clearly. As it moved along without sound a large line like a projector appeared in front of the object but did not move as the object did when it got to the line the object appeared to go into it and disappeared. Craziest thing I’ve ever seen a few moments after it disappeared there was a bright flash like lightning from the same area.
SpaceX launch from Florida