Universe is still a unknown area, which attract the interest of scientists. There is a story about origin of universe. Scientists believe that the universe was formed by big bang in 14 billion years ago. It exploded from the inside of the bubble to the current universe we see.
There are many planets in the universe. The distance between planets is not as far as you might imagine. And there is a black hole in the universe which is still a mystery, and can not be explained by the knowledge of universe we have known.
We should still work on the domian of universe continuously.
