Returng home about midnight I encountered a meter diameter sphere hovering about 10 ft over the road.

While returning home about midnight in mid summer 1975, I turned the corner in a suburban district of Ottawa and I say a spherical object about a meter in diameter hovering about 3 meters above the center of the street.  The object was bobbing around slightly and it surface seemed to be radiating multi-coloured light that was rotating around its perimeter.  The light was of very pure colors of orange, blue, red and white and seemed to be rotating in patches all over its surface.  I stopped to observe it for a few seconds and then began to approach slowly in my vehicle.  I got to within about 60 feet and the object began to rise slightly and move off toward the right side of the street.  It floated behind a tree and between two houses in the direction of the next street over.  I went around the block and once again saw it hovering above the middle of the next street.  This time as I approached slowly, it moved immediately in the same manner and direction without letting me get closer than about 150 feet.  Once again it floated between houses in the direction of the next street.  Again I went around the block and for a third time it was hovering over the middle of the street.  This time I accelerated towards it and it took off like a shot.  I have been present at military live fire trials at night where tracer rounds were being fired and this object moved considerably faster than a bullet.  It was out of sight in a fraction of a second.  I have never seen anything move that fast.  There was no noise or any other affect that I could sense from this object.