What's outside of space?

I think I see 7 questions there.

I will give my opinions on them, as you asked.

1) I think space is not infinite. For 3-dimensional denizens like us, it acts like it is infinite though; you can choose some direction in 3-dimensional space and move in that direction forever without being blocked and without finding any kind of border (you will just keep seeing stars and galaxies), but you will eventually find yourself moving through the same space over and over. I think that the amount of matter in the universe is also not infinite.

2) So far, science doesn't know what came before the big bang. We don't even know if there was a 'before'. My opinion is that there was an event in a multidimensional environment that caused our universe to come into existence as a sort of bubble inside that multidimensional environment. I have no idea what such a multidimensional environment would be like or what kind of event it was. For technical reading on this concept, refer to the brane cosmology reference below.

3) IF space is infinite and IF the amount of matter in it is also infinite, then yes, there would be an infinite number of persons identical to you, and an infinite number of other persons 99.99999% identical to you, and .....

Infinity is a funny thing that way.

4) I think the multiverse theory is a good theory simply because i think that our universe exists because of an event that happened in a multi-dimensional environment and i think such an event would not be unique. However, I don't think that such events would be so identical that the universes they cause to exist would also be identical to each other. Many might be extremely different from ours. (There are several kinds of 'multiverse theory'. See the first reference below.)

5) I don't know what the Hubble Volume Theory is, or even if such a theory exists, so I can't have an opinion of it.

6) Yes, it's possible that there was a "creator". However, the concept of a creator seems quite unreal to me, so I don't believe in the existence of a creator.

7) No, I don't think an afterlife is possible. All your memories and all your personality is stored in the 80 to 100 billion neurons and their quadrillion interconnections in your brain. Within minutes after death, these neurons starve and suffocate to death and the memory and personality they stored simply vanishes. Believing otherwise is believing in mind-brain dualism, and I don't believe in the idea of mind-brain dualism. The brain is a biological computer with parts and circuitry totally unlike the computer I'm using to type this, but it's a computer nonetheless.

(Edit - it appears that there is provision for only 3 references to be hot-links here, so my 4th is not blue. You'd have to copy and paste it if you'd like to read it.)

Good questions, I'll address them one by one.

"do you think space is truly infinite or do you think it has boundaries? What would be beyond those boundaries?"

The universe may or may not have boundaries, and we cannot tell. However, what would lie beyond them is entirely up to our imagination. Some people believe that nothing exists beyond the universe. Others who believe in the multiverse theory, however, think that alternate universes exist with different laws of physics, etc.

"And what came before the Big Bang?"

I'm sure you've heard people say "time and space are related". Without one, there cannot be the other. The main theory is that space was created during the Big Bang; as such, that was the birth of time. There cannot have been anything before it, and we don't know what caused it (unless, however, you believe God did).

However in the last few years, several mathematical cosmologists have taken seriously the idea that there was a Pre-Big Bang. Part of the reason for this may be because of the Cosmic Background Radiation data from satellites like WMAP. This data shows larger scale structure in the early universe than the older theories would have predicted.

"Some cosmologists believe that if you go far enough into space, you'll eventually reach a similar Galaxy to us. And a planet like earth. And people like us. And a person identical to you."

That may be possible, but it is extremely unlikely in our universe. Something interesting, however, is that if the universe was a googolplex meters long (which it isn't, not nearly), then you would eventually see clones of yourself and things around you. That's because the total number of quantum states in the space you occupy is 10^10^70, meaning the atoms in the space you take up can be arranged in 10^10^70 different ways. However, a googolplex is 10^10^100, so if you traveled far enough, you'd eventually see yourself.

Your thinking is all mixed up. The universe has no boundaries in space. There is no magic line where you can say "this side of the line is space, and this side is not".

I don't think any cosmologist believes what you said about going to a "similar Galaxy". Please name two, and indicate where they said such a thing.

Asking a bunch of disconnected questions, trying to start a general conversation about them, is not the purpose of Yahoo!Answers.

Infinite in time and space, i.e. there never was a big bang. There are a number of notable astronomers who reject the big bang theory. Some of them give their views in this documentary which you may find interesting...

https://www.youtube.com/watch?v=IFFl9S39CTM

Well its a view God created. Basically, why do humans find it hard to

>survive in space

>expensive and hard to do projects there

>you cant even go to nearest star besides the sun without wasting an incredicle amount of money and time.

>light speed will never be achieved.

so you see God says no. And it is no.