How big is the universe ?

Answer 1

the universe is expanding at a rate of one tenth of the speed of light (speed of light is 300,000 km per second). Recent estimate tells that the Universe has a diameter of 13 billion light years.

1 light year = 300,000X60X60X24X365 kilometers
Now imagine how big the 13 billion light years would be...

Answer 2

When we leave the Solar System, we find our star and its planets are just one small part of the Milky Way galaxy. The Milky Way is a huge city of stars. It is so big that even at the speed of light (300,000 kilometers per second or 186,000 miles per second) it would take 100,000 years to travel across it.
No one knows if the universe is infinitely large. We are not sure if ours is the only Universe that exists. And other parts of the Universe, very far away, might be quite different from the Universe closer to home. Future NASA missions will continue to search for clues to the ultimate size and scale of our cosmic home. HOweever, there is a theroy about the size of the univese:
There is every reason to think that the universe extends a long way beyond the part of the universe we can see. In fact, a variety of observations suggest that our visible patch may be a small fraction—maybe an infinitely small fraction—of the whole universe.

This view of the universe fits with the currently popular idea that the universe began with a vast expansion of size. The idea describes a kind of undirected energy present in the vacuum of space, called scalar fields, that somehow got channeled into a process called "inflation." By conservative estimates, the universe expanded so much during this period that something the size of an atom inflated to the size of a galaxy.

If this grand idea is correct, then the universe is larger than we ever could have imagined. But the question remains: Is there a boundary, and if so, what lies in the voids beyond? The answer, according to some cosmologists, is truly mind-boggling. If the universe sprung forth in this manner, then probably inflation has occurred in other places, perhaps an infinite number of places, beyond our horizon and outside of our time. The implication is that there are other universes, perhaps similar to ours or vastly different, each in its own space and begun in its own time.

Answer 3

If I told you how big the Universe is, you would not be able to comprehend it. Neither will anyone else. Scientist can give you rough figures and answers but they too do not have a definitive answer. The universe is forever, never ending............... Now, can you grasp that. I don't think so. You see the mind can not put that information into perspective. Infinity is another answer. That too is not comprehended by our brain as a logical answer. Think of a tennis ball. On the inside it contains all the galaxies we can think of, and all the ones we don't have a clue about. And you are traveling at the speed of light from the center towards the rubber skin of the tennis ball. Now when you reach it, then what. Does it end. If so, how thick is the rubber skin, and what's on the other side of it, and how far does that go, and what's on the other side of it............ Get my drift. It never ends.......

Answer 4

The universe is still expanding and it is continually getting larger. At the big bang, the universe was really small but it has been expanding at close to the speed of light (186,000 miles per second) ever since it came into existence about 14 billion years ago. One might say that from one end of the universe to the other that it is about 28 billion light years across. However we can only see about 13 billion years into the past at the present time.

Answer 5

If big you mean distance, the farthest known galaxy discovered is 13 billion light years away...if your asking about size it is likely that the universe as we see it is infinite. We know it is expanding and doesn't appear to be slowing down...if that is projected out it means only one of two eventual possibilities (1) the universe expands forever, or (2) it expands so much it reaches a point of equilibrium with gravity and slows to a stop, then begins a reverse and eventually will collapse on itself, which could usher in another Big Bang!.

Answer 6

If you mean by the universe composed of all the galaxies and matters then the answer, according to the scientists, there is a limit but expanding in the never ending space. According to Hubble, all the galaxies are runing away from the center in all direction of the space with tremendous speed which is also accelerating ! There is no limit of space , that is infinit!

Answer 7

The universe is so big that it is endless. It keeps on going for ever. If you are to travel the universe you will never come back you will even die in space and you space rocket will just keep on going. That is the only way to describe the universe to you.

Answer 8

It stretches from point A all the way over to point B with this little section of a trillion galaxies WE call the universe just a little bump in the path. Point A is about an infinity one way and point B is yet still another infinity the other way.

Answer 9

THe Universe is infinite. You would never reach the "end" because the Universe "wraps" around to where you began...at which point you would probably give up and go home.

Answer 10

It's not in our powers to say now big is the universe. Many people say it's infinite while other are saying that is a really enormous giant colossus ball, but if this is true then what's around it?