how big is the universe? from where the universe come from?

Answer 1

Its more than one can explain. Please visit the link given below and read it thoroughly so you get a better understanding
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Answer 2

It is believed the universe started out as a infinitely small, dense, and hot single point. Where this point came from is impossible to know as time itself did not exist before the 'big bang'. For some reason that may never be proven, the universe began to expand at a phenomenal rate. In the first second it expanded a 100 trillion, trillion, trillion, trillion times to the size of a pineapple! The big bang created everything we see today and time itself.
Since the big bang the universe has been expanding in all directions, everything moving away from everything else.
Light travels at about 300 000 km a second. The furtherest galaxies we can see today are around 12 billion light years away. Allowing time for the formation of the galaxies and the universe gaining stability scientists believe the 'edge' of the universe to be around 14 billion light years away. Therefore the diameter of the universe is predicted to be around 28 billion light years. If light travels 300000 km a second then it travels -
300000 km x 60sec = 18000000km a minute
18000000km x 60min = 1080000000km an hour
1080000000km x 24hr = 25920000000km a day
and finally
25920000000 x 365days = 9460800000000km in a year!
Multiply that by 28 billion and there you have it, the size of the universe in kilometers!!
9460800000000 x 28000000000 = 264902400000000000000000kms! (i think thats right! so many zeros!)
This is the horizon of the 'observable universe', a limit set by the speed of light and the distance it has traveled since the beginning of the universe. Some believe what we see could be just a fraction of the universe. Who knows?!!
Hope this helps!
Steve

If anyone has anything to add to this or a correction please let me know. Any other ideas are appreciated to. Love learning about this kind of thing. [e-mail]

Answer 3

Well we really don't know how big the whole thing is because we don't know it's shape. We can't see it's boundary so one can't really know how far it goes. It's a bit like trying to work out how big your city is when you can't see more than a block due to all the smog.

What we can see goes out a mighty long way. I'm hoping that you know what a galaxy is. Well astonomers can see galaxies so far away that the light from them has taken billions of years to reach us! So what does that mean? Imagine that a galaxy was the size of a small coin. It takes light about a hundred thousand years to travel from one edge of the coin to the opposite edge. On that scale the furthest galaxies that can currently be identified would be several miles away.

But that may be just the start of it. The light from distant galaxies gets reddened. According to theory, galaxies that are far enough away will be so reddened that we can't detect them. That distance marks the boundary of the observable universe.

Then beyond that would be vast numbers of galaxies that we can never see. Would you class these galaxies as being in "another universe"?

Within the bounds of science, the big-bang theory is the most generally accepted theory amongst cosmologists today to explain how the universe has arrived at it's current size and structure. It is the theory that best fits all the available scientific evidence.

Outside of science there are other competing theories to explain it's origin and evolution.

Answer 4

The Universe is not infinite. it is exactly 4 x 10_26 meters to get to the parallel universe. to get to the identical parallel universe you would have to go 10_10_118 meters which is on beyond incredible. This is quantum Physics and I'm going very deep inside physics. If you would like to see a book filled with how the universe began and how long the universe is then get an issue from scientific american called parallel universes, A scientific american special report. You will look at the deepest things you can ever see in the world. The most amazing expalnation of how long the universe is and getting into a very deep vastness of quantum physics you can really impress your parents. Try to find it you will be very amazed.

Answer 5

If we assume that the universe formed when the primordial atom exploded in a Big bang. Then taking into account the age of the universe, speed of light and the expansion of the universe the observable universe is 156 billion light years wide. mind u this is just an estimation by the astronomers

Answer 6

Size
The comoving distance from the Earth to the edge of the visible universe (also called cosmic light horizon) is about 46.5 billion light-years in any direction.[4] This defines the comoving radius of the observable universe. The observable universe is thus a sphere with a diameter of 92–94 billion light-years. Since space is roughly flat, this size corresponds to a comoving volume of about


or 3.56×1080 cubic meters.

The figures quoted above are distances now (in cosmological time), not distances at the time the light was emitted. For example, the cosmic microwave background radiation that we see right now was emitted about 13.7 billion years ago by matter that has, in the intervening time, condensed into galaxies. Those galaxies are now about 46 billion light-years from us, but at the time the light was emitted, that matter was only about 40 million light-years away from the matter that would eventually become the Earth. See comoving coordinates.

Answer 7

For an answer, you have to think outside of your box, your universal box.

I can propose some theories and you see what fits your imagination and feelings.

First of all, are you sure that there is only one universe?

Since time is linear, or another way to say it: a man made thing, what if the universe(s) have always been there? Infinite universes, infinite amount of time (as we imagine time) that it/they have been around. The cycles of life repeating over and over again.

And where they came from? How about if God got bored one day and wanted to express him/herself. If you were infinite in all directions and all facets of existence were infinite, then why not create an infinite creation(s)? How about if the creations never ended and also never began, but just are. A sort of Is-ness being "out there".

What about the part of the universe where everything, including ourselves, is connected? Would you consider that there is some "glue" in the universe(s), something holding it all together. Could that thing be named love? Something that connects everything on all levels?

This stuff is mental chewing gum. You are suppose to put it in your head to chew on and take it out from time to time to rest, eat, and play unless you call chewing on this stuff play, like I do.

Have fun with it and enjoy what you have. Look inside of yourself for the answers, you will find them there. Keep asking and keep looking inside and you will be surprised one day to begin to find answers to all of your questions.

Happy Holidays.
Great Questions!

Answer 8

If you haven't heard of the Big Bang theory, scientists think that the universe used to be REALLY small and it eventually exploded. The univers keeps expanding. Scientists used to think that the universe would eventually stop expanding and collapse in on itself, but now they think the universe will expand faster and all the molecules will tear up. Something like that anyway.

Answer 9

The universe is infinite! How weird a thought..
Big Bang theory anyone? It's plausible then other questions arise-- where did the stuff that caused the big bang come from?
In my opinion, it didn't come from anywhere. It just is. Always existing. I know our brains our programmed to know "beginnings" and "ends" but sometimes there is none.

Answer 10

Stephen Hawking's two books:

The Universe in a nutshell
The illustrated brief history of time.

Answer 11

The Universe is the biggest place that you can imagine, indeed we can´t see walls, roof, etc
From where? from a cosmic egg,