@Sir Neuron,
Suppose that one could construct a filter, wall, field or something, that provides a total shielding. And that you then out of this "something" constructs a bubble, the total void. Since nothing is there, neither space nor time, no physical laws, absolutely nothing, all the known space could be fit in the bubble. If you think of it this way, the known space may be infinitely greater, in terms of mass and space than is now expected.