On Sat, 20 Feb 1999 13:38:29 +0000 Damien Broderick
>Hmm. I wonder if really spectacularly hot crushed stuff might also
>superpose and tangle into a Bose-Einstein condensate, if which case
>radiation near the Big Bang might also have been very slow, and,
>what? Nothing much, probably, since the expansion of spacetime was
>happening faster than light anyway. Still...
The Sun has a lot of 'really spectacularly hot crushed stuff' in its core where the nuclear fusion occurs. It takes many years for photons produced by the reactions in the core to reach the outer layers, whereas to travel the same distance thru empty space, a photon would take only 2 seconds.