Tau.Neutrino said:
One reads and hears about the big bang starting as a point in space time.
Some speculate that particles then appeared one after the other.
I have read that is not the case.
Instead particles appeared all together at once simultaneously.
Would this would be some form of sphere or something else ?
Think of it as evolution, or if you prefer, symmetry breaking.
There is a hypothesis that the common ancestors of all modern particles (including the graviton) appeared spontaneously over a very short period of time and then these diversified into the subatomic particles that we all know and love today.
That remains a hypothesis.
As for “sphere”, think “pointlike”.