how big is the univers?

Answer 1

The part we can see is a sphere 13.6 billion light years in radius. Use the customary equation for the volume of a sphere to get a number on the order of 8 E 30 cubic light years. There is more of it that we can't see.
-- Robert A. Saunders, Lake Stevens, WA.

Answer 2

Many prefer, when talking of 'all that has been, all there is, all there will be', as the Cosmos (capital 'C'), as distinguished from this universe, which may be a little phase of a few billion years that this part of the Cosmos is going through. I believe the figure agreed by astronomers, is that the farthest stars we can detect are some 15 billion light years away, thus, the light has been travellingg from them for that long. Yet if the stars took time travellin there, or time from the Big Bang to form, the universe, as we know it, may be older still. A light year is nothing we can comprehend, nor is a billion years. Our Earth is some 4.6 billion years old. The Cosmos? Ask the First Ones.

Answer 3

So long as you think in three dimensions, you will never know - the universe is just not made like that.
I have imagined the universe as a shaped like a huge raspberry with lots of globular boundaries that are actually vast regions of multi-dimensional gravitational gradients that pull the "edge" of the universe around into itself.
Consider another concept. Draw a circle with a radius of say 1 metre. Look at the curve of the circle - you can see the curve. Now imagine a circle with a radius of 4000 metres (the earth at the Equator) pretty flat but still with a curve i.e. lines going off in opposite directions will meet. Now imagine a radius of infinity and consider the same lines going off into infinity - where they too will meet. This is "possibly" how the universe can be infinite yet bounded...

Answer 4

There are several theories of the vastness of the universe. Some dictate that it's finite, while others propose an infinite theory. However, the vastness of the Observable Universe is measured by its age. It is believed that the universe is 13.7 billion years old... hence it should be valid that it has a radius of 13.7 billion light years. One should note that this is a very simplified assumption, as the universe may infact expand at speeds faster than c. Hence, another theory states that the observable universe may be as old as 38 billion years. This simple question involves massive undertaking; we may never know the answer.

Answer 5

As small as an Atom. To see the world in a grain of Sand.... You may think the universe is big, but there is someone out there holding a grain of sand on the tip of his finger and wondering "Would this grain of sand be my universe if I were a billion times smaller than the sand?"
Perhaps this universe is just a small part of a DNA molecule that comprises a bigger part of someones inner blueprint.

Answer 6

I think its a composition beyond our comprehension. What I don't get is how can it actually have an end? I mean in our comprehension if something ends then something else begins even if it is just empty space - so how can the universe end and have no empty space - how can there be NOTHING! no space just NOTHING? It's very bizzare when you start trying to answer this. Well it is for me anyway. Sorry not much help am I.

Answer 7

We know how big is the Earth ! If earth is like a pebble, then Sun is of the size of a football. Imagine how big the sun may be ! It has a group of planets going around it, with satellites going around them. It has its own solar family and then Sun is just one of the stars in our Milky way galaxy. there are many millions of stars in this galaxy, even bigger than sun. imagine what may be the size of galaxy which has millions of stars bigger than sun. Such millions of galaxies exist in Universe ! so imagine, how vast may be the universe !!!

Its never ending, infinite and beyond our imagination !

Answer 8

About a third the size of of David Hasselhoff's Ego

Answer 9

Mankind may never know, I think it is much bigger then we even can imagen. God made it and He is much bigger then us, so the Univers, must be really big.

Answer 10

As big as the universe. It expands continuously.