Re: Science? What happened to "hypothesis" vs "theory"?
Maxwell's equations wrong? Nope, they just mean that the electromagnetic constants such as permittivity and permeability of free space were different.
In fact, if space-time was of a very different density/size in the early universe I would be very surprised if the nature of "free space" was identical to now. Its just that physics has always assumed that natural constants are, well, constant over time and space. While it seems a reasonable start, we don't have any direct way to verify that, so observations of things from the early universe are possibly the only way to tell.