If the universe began in an infinitely small volume, why isn't it a single supermassive black hole?

Question

I do know that space-time itself, is expanding.

Answer 1

Because whatever the big bang event was , it was something that was more powerful than gravity, which may not even have existed at the initial moment.

Answer 2

Space did not exist before the bang. When the branes collided, they caused the bang. At that moment space began to exist and expand. There was no volume of anything before the bang. As the bang cooled, radiation condensed into matter and anti-matter. As the m and -m annilated each other when they collided, there was slightly more matter than -matter. This excess matter is what formed the material of all the matter in the universe today.

Answer 3

A black hole [if it could exist] requires dense matter and an intense gravitational field.
when the universe came into existence,there was no matter,no gravity,none of the strong or weak forces,nothing but a space-time pulse of minimum duration.
The quantum effect that followed this initial pulse gave us the universe that we experiences today!

Answer 4

It has to do with a nuance of the big bang, it was an explosion of space, not an explosion in space. Space is inflating, not hurtling away from an explosion. Think of an uninflated balloon with pennies glued to its surface. As the balloon expands, the pennies get pulled apart.

Now to add yet another nuance, Space is infinately large, so even if it shrinks, it still is infinately large (1/2 of infinity is still infinity).

Answer 5

The prevailing quantum physics thought is that it was due to "clumping", very slight irregularities, in the primordial singularity. The notion of the Big Bang is speculative at this time in quantum physics.