I don't think it's possible [as a simple exploding star]. If you assume that the entire mass of the universe was thrown out of one big star exploding, and that most of that matter being thrown out had extremely relativistic velocities, and that p-p reaction efficiently produced most of the underlying energy for the explosion, the initial star would have to have been about ten thousand to a few million times the mass of the entire universe as we see it.
Originally posted by rambo07
@May 5 2004, 07:45 PM
how big a sun would you need to produce a universe if it went meganova,surely there must be a mathematical equation for this? if there is ,then why can't it be so?
The Schwarzchild radius for this much matter is quite large. If I've calculated it correctly, it seems to be larger than the entire observable universe.
Granted, there could be some odd physics in that kind of environment, and there are some alternative theories that say the universe as we see it is the inside of a black hole, but that isn't what you were asking about.
Forming opinions as we speak