Linked Questions

5
votes
3answers
4k views

Can there be an infinity of stars in the Universe? [duplicate]

I have a mind puzzle. Can there be an infinity of stars in the Universe ? I have 2 opposed reasonings, yet I don’t find any flaw in them. Can you help me here ? Answer A : No, the number of stars ...
1
vote
1answer
617 views

If the universe keeps expanding, can we travel to the edge of the universe? [duplicate]

If the universe keeps expanding, is it possible to travel to the edge of the universe?
3
votes
1answer
254 views

How could we tell if the Universe is infinite? [duplicate]

I've heard from a number of people that the Universe is infinite, and from my perspective, I can't see how this can actually be known, especially given that the Universe started out a finite size and ...
-1
votes
2answers
117 views

Size of the Universe [duplicate]

The number of atoms in the whole Universe seems to be finite, yet the Universe is infinite in dimensions? How it is possible in the Universe?
1
vote
2answers
287 views

Infinite universe? How? [duplicate]

So it seems the overall thought is that the universe is infinite. I don't get how. Most depictions I read mention something to the effect of "at 1^-20 seconds the universe was the size of _". (...
2
votes
3answers
173 views

infinite Universe [duplicate]

I was watching a documentary and they said that Cosmologists have determined that the Universe is infinite. I find this to contradict the expansion theory. If the Universe had a starting point then ...
-2
votes
1answer
150 views

How do we know that there is no border at the end of "infinite" space? [duplicate]

It has been suggested that space and beyond is infinite, but admittedly the same hypothesis was made by virtue of the fact that it is physically impossible to prove otherwise. How do we know that ...
0
votes
2answers
137 views

What is the size of the universe.is it infinite? [duplicate]

What is the exact size of the universe.is it infinite?
0
votes
0answers
67 views

Is the Universe infinite? [duplicate]

https://en.wikipedia.org/wiki/Universe Is the Universe infinite or finite ?
1
vote
0answers
64 views

Is it relevant to ask the limits of space? [duplicate]

Yesterday I watched "The Orville" episode 4 and there was interesting moment where a kid and old man saw the space for the first time. Kid: What is this? Capitan: Kid, that is space. Old ...
7
votes
7answers
4k views

How can an infinite universe expand?

I understand the expansion of the universe as actually an increase in the ratio of space to matter. Is this a correct understanding? Otherwise, I don't understand how an infinite structure can expand....
3
votes
3answers
547 views

How is the universe bordered?

This answer says that some models describes the universe as finite. How do those models describe the universe's border? Does the border (theoretically) exist? Is it a solid border? Do they predict ...