Do you think that the universe is infinite in size?

Post Reply New Topic

Do you think that the universe is infinite in size?

No, everything that has a beginning has an end If Big Bang theory suggests that the universe started somehow and that it spreads uniformly in all directions, then it cannot be of infinite size. I guess that there are more universes.

I think it's finite but unbounded. To me it has a size but if you keep going in one direction you just end up at the same spot as you were before. Just the same as being on the surface of Earth.

I think there could be other universes parallel to this one.

"Whatever can happen does happen, in separate quantum realities ..." (ST:TNG)

Infinite volume of space, finite, but constantly expanding volume that contains matter.

very hard to answer. there are yes and no for both options. The only thing i have problem with is that expansion thing; if something is expanding, it means it has a size, so it's finite .... maybe the finite universe is expanding into an infinite void... but i doubt about expansion anyway....

What would a boundary consist of ? What would be on the other side ?

This is such a hard question, and i think with as much technology as we wanted to creat we would still never answer it as it would just creat more questions.

Although its (as i feel) an imposible question question it is very interesting. I love hearing peoples ideas and thiries of what they think is on the other side of how only how far we can see so far.

I agree with Alex. Finite but unbounded. I'm a bit rusty on the science now but as I remember if the universe contains enough matter then it is finite but unbounded meaning as Alex put it that if you travel in a straight line you will eventually get back to where you started. However, if there is not enough matter, then the universe is finite and bounded but either way you cannot get "outside" of the universe and the question what is beyond the edge of the universe does not apply because the universe itself creates the space and time in which it exists. There is no such thing as beyond the edge.

The problem here is that as human beings our experience is limited to three dimensions of space and a very small range of scales of size. Common sense completely fails when looking at things very small (quantum effects) or very large (scale of universe). Similarly common sense breaks down at velocities close to the speed of light. I remember seeing a graph in my (physics) student days of sizes against velocities and human common sense fitted in only a tiny portion of the graph.

I don't think it could be infinite because of A) the universe began as a singular event (the big bang) the cosmic background radiation proves this. The CBR gives us an approximate age of our universe (roughly 14 billion years old), and from this we can infer that it is finite in size. B) If the universe was infinite it would contain infinite mass and according to Einstein that mass is also energy, thus infinite energy distribution.

The univrese is infinitely big and infinitely small.

i would say that everything has an ending even the universe, it probably has an ending between the gap before were it expand's which is a line between, a dark planet filled space and then there's a 'white nothingness' which is to be used up but never consumed.

Anyone understand what i mean

You may understand what i mean, if you have ever watched a futurama or simpson's episode where they are in a never ending loop of nothingness.

Finite but unbounded