Could Our Universe Be Part of a Larger Cosmic Cycle?

[CrashDK]

I was just wondering, that what if the big bang was not a single event, but actually a black hole exploding as a small part of a much bigger universe? What was before the big bang, nothing, then what "held" that nothingness? Where did the matter, that made up the exploding point, come from? What would happen if you were to fly "through" the universe wall, is there nothing there?
Dont fry me as I am not a scientist. And I appoligise if me spelling is somewhat off, I´m danish ;)

 

[mgb_phys]

I was just wondering, that what if the big bang was not a single event,

As far as we are concerned nothing, we can't know what happened before time=0 so it doesn't have any effect

but actually a black hole exploding as a small part of a much bigger universe?

Not a black hole, but it coul be that the big bang was created by an event in some larger structure.
Usually called a multiverse - because it generated at least one universe (ours!) and presumably many others.

What was before the big bang, nothing, then what "held" that nothingness? Where did the matter, that made up the exploding point, come from?

Physics has no real problem with nothingness.
There is no law against a universe coming into existence from nothing, the conservation laws don't necessarily apply at the quantum scale at the start of the universe.

What would happen if you were to fly "through" the universe wall, is there nothing there?

The definition of a universe is pretty much that you are stuck in the one you have.

I´m danish ;)

No problem, we only dislike two kinds of people. those who are intolerant - and the Finns
(and perpetual motion machines, and people talking about aircraft taking off from conveyor belts)

 

[Entropia]

First of all, there is no need to apologize for your spelling or for not being a scientist. These are interesting questions that have been pondered by scientists and philosophers for centuries.

The idea that the big bang was not a single event, but rather a black hole exploding as a small part of a much bigger universe, is known as the "big bounce" theory. It suggests that our universe goes through cycles of expansion and contraction, with each cycle beginning with a big bang and ending with a big crunch. This theory is still a topic of debate among scientists and there is no clear evidence to support it yet.

As for what existed before the big bang, it is believed that time and space as we know it did not exist. The concept of "nothingness" is difficult for our human minds to comprehend, but it is possible that there was a state of infinite density and energy before the big bang.

The matter that made up the exploding point is thought to have come from the intense energy of the big bang itself. This energy eventually cooled and formed the first particles and atoms that make up our universe.

As for flying through the "universe wall," it is important to understand that our universe is not like a bubble with a defined edge. Instead, it is constantly expanding and there is no clear boundary. It is also possible that there are other universes beyond our own, but we have no way of knowing for sure.

In conclusion, the questions you have raised are complex and fascinating, and there is still much we do not know about the origins and structure of our universe. Keep asking questions and exploring these ideas, as that is how scientific understanding and progress is made.