I think that in an infinity, sometimes you'd get a universe that simply couldn't develop mass, where all particles remained as energy rather than clumping into atoms. You could conceivably have a universe with mass but no energy, if it remained extremely dense and small, but that universe is less likely to occur, IMO.
If BigBang theory is to be believed, Space/Time/Energy/Matter were ONE in a "singularity" ? and energy did emerge before cooling enough to form matter? Which is another way of saying, Matter/mass IS Energy?
Mass-less energy? Energy-less mass!! ?? . . . i don't know.. i'm in over my head with this stuff.. it is fascinating though. I'm still suspicious of Space/Time being a consequence of Energy/Mass... but they must be EQUALS. ¿?
Edited by lightly, 11 March 2012 - 10:53 AM.