The universe is infinite

Look into the night sky. What do you see? Distant stars, immeasurable void, the cosmos, the infinite universe. And what is the universe?
The void space vacuum, which occasionally removed at great distances from each other, there are galaxies, stars, planets, asteroids, comets, cosmic dust and other elements of matter.

To reach the nearest planet outside the solar system needs several years of travel, and the speed should be equal to the speed of light, which we are unlikely to achieve in the near future. Can you imagine such a great distance? But it is the closest planet to us.

In the universe, billions of stars are visible from the solar system. In fact, their number is much greater. The universe is infinite, it has no boundaries. Before them it is impossible to reach and see. They are not even imaginable. What do we know about the universe? Almost nothing. We can only observe from Earth, starlight that reaches us through millions of years. During this time, perhaps already the star disappeared into the abyss of infinite space, becoming not more then one dust cloud. It is said that the universe is expanding. It only expands in our visible horizon. Using modern technology, we can see the light from distant stars, weak, residual distorted, fading light vibrations. Why we do not see what is to be next? These vibrations just do not reach us, fainting and extinguished by such a long journey. So, we see only a part of the universe. If we were able to reach the most distant star visible to us, from there we would see more farther away, innumerable stars, space objects, or are you hoping to see the "brick wall"? In the universe there are no limits
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The Universe is a huge cycle, a vicious circle, Collided, or the way you like. It can not fly. If, however, to imagine that we can fly through it with incredible speed, then returning back to the world from where we flew, the time will be drastically completely different. Because the universe is impossible to fly through. where ever we go, we are always heading back to the starting point, it attracts us as an electron that can not break away from the nucleus. But we can not fly away, because the distances are so great that they even can not be imagined.

For comparison, we are on the globe on a straight road. More precisely, it seems to us that we are right, but Earth's gravity distorts our direct way. This we now know that the Earth is round and that we are going in circles. The universe distort space as the Earth distorts our way. Across the Universe pull it quickly, even if we fly at the speed of light. It's just that we will pass the Earth less than a millimeter per year, but in this time grow the grass and trees, dry up rivers and seas, there are new, towering mountains, crumbling cliffs, canyons are formed, everything changes. And if billions of years we go back, it will be a completely different world, unknown to us, we do not even realize that we are at the starting point. We'll go ahead and look, where is the starting point and where the end of our journey is, where the border are. But we did not find. Modern humanity is not able to fly around the universe, finding its limits, but simply to recognize its greatness and infinity.