In the Game of Life, we can define the " speed of light " ( c , just as in physics) as the maximum attainable speed of any moving object, a propagation rate of one step (horizontally, vertically, or diagonally) per tick. This is both the maximum rate at which information can travel and the upper bound on the speed of any pattern. How fast (in terms of c ) does the glider move? Can you find a spaceship that moves faster than a glider?