- #1
- 2,168
- 193
There are couple things that keep me questioning about the nature of the universe.
Let me start from the begining.
Big Bang happened and our universe was created, and from now on let us suppose that the universe is infinite in size. Later on, the universe expands and after a time we can see only a region of this universe (which we call observable universe). From current observations (within our ability to measure) we can see that, the portion that we see is spatially flat. Since we assumed the universe in infinite in size (at the begining) it doesn't directly mean that universe cannot have a spherical or torus or other kind of finite size geometry ?
Other possibility is that when the Big Bang happened universe has finite size, since I think only in this case we can discuss the possiblity of the finite size geometry models for universe ?
Are these ideas true ? If it's true then the question (what is the topology of the universe) can be reduced to, does the universe has finite or infinite size after singularity ?
Also, in both cases universe is finite in timewise since it has a starting point ?
Let me start from the begining.
Big Bang happened and our universe was created, and from now on let us suppose that the universe is infinite in size. Later on, the universe expands and after a time we can see only a region of this universe (which we call observable universe). From current observations (within our ability to measure) we can see that, the portion that we see is spatially flat. Since we assumed the universe in infinite in size (at the begining) it doesn't directly mean that universe cannot have a spherical or torus or other kind of finite size geometry ?
Other possibility is that when the Big Bang happened universe has finite size, since I think only in this case we can discuss the possiblity of the finite size geometry models for universe ?
Are these ideas true ? If it's true then the question (what is the topology of the universe) can be reduced to, does the universe has finite or infinite size after singularity ?
Also, in both cases universe is finite in timewise since it has a starting point ?