In reply to Stephen A. Lawrence's message of Fri, 23 Sep 2011 14:12:09 -0400: Hi, [snip] >In fact, the questions aren't nonsense; they just need to be carefully >posed to get sensible answers out of them in a universe where SR applies. > >There is a "distinguished frame" for the universe: The rest frame of >the three degree background radiation. There just is one inertial frame >of reference in which that's isotropic -- in all other frames it's red >shifted in one direction, blue shifted in the other. That frame is >(presumably) the frame which is at rest relative to the primordial fireball.
How can you know for a fact that the "rest frame" of the CMBR is the same all over the universe? We can really only detect it in our local neighborhood. What happens to the heat radiated by the Earth (and every other mass in the Universe)? I suspect it ends up being degraded until it becomes the CMBR, IOW I don't think the CMBR is necessarily the remnant of the big bang. [snip] Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
