How+Big+It+Is

We have always believed that the universe was never ending. In space there is a point where we can see the universe and then after that point we have a part of space where it is unknown. the speed of light travels at roughly 300,000 kilometers per second. that is the fastest speed in the universe, nothing can go faster but, compared to the distances between galexies 300,000 km/s isn't actually that fast. the most distant galexies we can see now are about 10 to 12 billon light-years away. so now we are surrounded by a thing called a "horizon" that blocks us from seeing what is past it, its like watching the sun set. Horizons have a diameter of about 28 billion light-years long. this fact is a good support to the theroy that the universe is never ending. this view of the universe also holds up the idea that the universe began with a immense expansion

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.