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How big is the universe?
Is the universe a finite or infinite universe?
How do you know if the universe is infinite or finite?
Is the universe bigger than we can see?
How big is the universe if we live in 3 dimensions?
Is there a universe beyond our visibility limit?
Aug 10, 2021 · This has left scientists wondering about the furthest reaches of space and what they may look like. What do they think regarding the fate of the universe? Will it expand forever?
- Noor Gillani
Aug 14, 2021 · The size of the entire universe is uncharted. But is it actually infinite? Five experts express their take on whether space is infinite or not, each from a different angle.
- Anna Moore, Astronomer - Maybe
- Sara Webb, Astrophysicist - Yes
- Tanya Hill, Astronomer - Yes
- Sam Baron, Philosopher of Science - No
- Kevin Orrman-Rossiter, Science Historian - No
The short answer is we don’t know. We know the observable universe — the part we can visibly see and measure — began around 13.8 billion years ago with the Big Bang. So we know the age of the universe is finite at least from the time of the Big Bang. But the universe is getting bigger. It has been expanding in all directions ever since the Big Bang...
I believe so. We know the universe had a beginning with the Big Bang. And from what we observe, this beginning didn’t occur in any one area. No matter where you are in the universe (in this galaxy or one far, far away) space appears to be expanding in all directions, with you at the centre. Now, we calculate the universe is about 13.8 billion years...
There’s a limit to how much of the universe we can see. The observable universe is finite in that it hasn’t existed forever. It extends 46 billion light years in every direction from us. (While our universe is 13.8 billion years old, the observable universe reaches further since the universe is expanding). The observable universe is centred on us. ...
There is one tempting line of reasoning that suggests space must be infinite, but which I believe is wrong. It goes like this: if space is finite, then it would have an edge. But imagine getting into your spaceship and flying to the far reaches of the universe. It seems inconceivable you would find an edge. What would the edge even look like? Surel...
By “infinite” we usually mean something which is limitless or endless. My position is space is finite. However, to demonstrate that let's propose, for a moment, that space is infinite. In a simple sense if this were the case and I set out in a spaceship in any direction, I would never reach a boundary. But there's a problem with this experiment: I ...
The universe we can see stretches out 46 billion light years from us. But this is just a tiny part of what’s out there. We know the universe is about 2.725 K cold because of the cosmic microwave background. Before the Big Bang, the universe grew really fast, making it hard to understand its size.
Mar 3, 2020 · First, it’s still possible the universe is finite. All we know for sure (mostly for sure) is that it’s bigger than we can observe, essentially because the farthest edges of the...
Apr 13, 2022 · However, the lack of repeating structures and the spatial flatness of the Universe tells us important information about how much larger than the visible part of the Universe, at least, the...
Feb 27, 2012 · The universe’s size depends on its shape. If the cosmos is flat or negatively curved, then the universe is infinite; if it’s positively curved, then it’s finite.
