An object traveled directly above then flash and split into eight equal size objects traveling at same speed but opposite directions.

Shiny object was high above and traveled at high rate of speed. (faster than a commercial airplane) When directly above, gave off a bright flash. Without loosing momentum the object split into eight equal size objects and traveled in opposite directions at same speed as initial object. Almost as if dividing the sky into slices. Objects to high for me to see a clear shape. At first thought it was a jet because of the stainless steel like sheen (chrome like) but noticed it gave off no sound. At first thought it had exploded but then realized the pieces kept going until disappearing over the horizon. It was a warm day, the sky was clear, no clouds. I was thirteen years old, coming home from school and threw my backpack over the fence to my back yard when I looked up and noticed object. Never seen anything like it since.
Date is approximate.  PD