It was suprising to me when I heard it. How could we not know it would happen before hand? Doubt explanation of it needs new laws of physics, item is common pla

It was suprising to me when I heard it. How could we not know it would happen before hand? Doubt explanation of it needs new laws of physics, item is common place and yet we were all caught off-guard. Wonder who different other planets even in our own solar system are, even if we know all the laws of physics and chemistry that guide those reactions; never mind planets in other solar systems