Thanks for the feedback, but I was referring to a much more literal definition of pre-Copernican: that the earth is the literal center of the universe, absolutely unmoving, and everything else revolves around it. I read something in a book on the CHaBa"Dniks in a bookstore that led me to suspect they might object to the traditional Copernican and post-Copernican helio- and a-centrism.
Of course maybe you're saying the same thing in a more profound way. I'm afraid I ain't that profound.
Besides, as I understand it, Einstein merely came up with a theory. It has neither been proved nor disproved, and it possibly never will be.
If I understand correctly, the Rebbe held that both the earth and sun, as well as all heavenly bodies, are moving around each other (as per Einstien) so there really is no room to say definitively that *we* are revolving around the sun. Rather it depends on your perspective, and the way we choose to base our perspective affects the outcome. I think the success of the Rebbe's movement can be attributed in large part to this approach: Each emissary moved to a new city with the firm belief that Judaism in that city revolved around him and the Rebbe's teachings, and so it became in reality. This might come across as offensive to some so I apologize for that in advance; in my last post I pointed out that viewing yourself as the center must be accompanied with all due humility, of knowing that G-d placed you in that position etc.