Mysterious light in the sky over Southeren California

In the summer of 1970, I was camping out in the backyard of my grandmothers house and looking up in the sky I saw a white light coming from the east and going west.  Thinking it was a satellite I followed it while watching it another light came from the west heading east on a collision course.  Thinking it was a big explosion about to happen I watched it until they got so close together they became one light, after about 2 mins the light headed south leaving a trail of light behind it and disappeared out of sight.  The two light were about the size of a ball point pin dot on a piece of paper.