It's Official: We Were WRONG About the Big Bang

the real question that i have is .. if the macro scale universe is expansing .. is that expansion also happening on a nanoscale aswell ? are atoms today a tiny tiny bit larger than a million years ago ? .. also what evidence do we have that the universe is actually expaning at all from an outside viewpoint ? `maybe its just like the parameters what space inside the universe means are changing while we in fact are completely static to an hypothetical outside observer ... we dont even know if time is just a phenomenon completely based upon that expansion or the other way around ..