In the mid 1950s, on the grounds of Stanford University in Palo Alto, CA, my wife and I were driving late one afternoon on a back road, parallel to and South of to San Fransiquito Creek, where the Stanford Shopping Center is now.
At that time, it was a back road.
As we were about a ½ mile West of El Camino Real, a brilliant ball of silvery/white light, about 3' to 6' feet in diameter, came whizzing in from about northnorthwest and landed then bounced a couple of times on the ground approximately 100' to our South, in what, at that time, was an empty field bordered by a barbed wire fence.
Being amazed and wondering, I stopped the car and attempted to get through the barbed wire, to see what the thing was.
But, before I could make it through the fence, say in about 5 minutes.