Exploration universe, can let the mankind discover cosmic mystery, the meaning of unlock life. Admire inspect sky, what can let an individual understand the universe is big, those who comprehend oneself is small, widen breadth of mind thereby. Of course, in present city, because smooth pollution is serious, we see the beauty of sky very hard truly. So, to sky, we more moment can let his thought flow freely only. So, you know to be in sky, what is the most beautiful? Not be some one quarter star, also not be certain constellation, however galactic. In light of the perspective with us, the Milky Way is be worthy of the name really, it with respect to a endless flow in just like night sky, fetching and infinite daydream. So, from of old, have a lot of stories about the Milky Way, and Fan Zhi loved the celestial being that what we are familiar with most is cowboy and Girl Weaver.
Of course, we knew now, the Milky Way is not a river that is hanged in the sky, however a galaxy, a giant galaxy. We live on the earth, and the earth is an ordinary planet in solar system only, and as star is fastened, our solar system is the component of the galaxy, over the cantilever that is located in a galaxy, it is not apparent very. Because the galaxy is too big really. Does the galaxy have how old? In our acknowledge, the sun is unique, it is a kind of great presence, and the star like the sun, 100 billion are amounted to in the galaxy, this still is conservative estimation, also the scientist thinks to be able to achieve 400 billion, and our sun is this only 100 million thousands of a medium, however amid still does not calculate big.
We are consist in in a such giant galaxy, and although the galaxy is giant, but it is a compressed structure apparently, because will look from the earth, the Milky Way is a long and thin smooth belt, be opposite so the times of cosmic utterly ignorant, we just can imagine it into a river. But actually the galaxy is not a smooth belt, however galaxy of a helical, of course, we cannot see, because our body is in the galaxy, unless we can jump,give a galaxy, in its ability of the observation on perpendicular direction gets true galaxy picture quite, accomplish very hard still at present nevertheless. Do not say to jump out galaxy, develop a solar system namely enough also to the mankind difficulty. Nevertheless, but the real kind appearance that does not hamper we go understanding a galaxy.
Are we how to be informed a galaxy of real kind appearance? We although cannot the appearance appearance of oneself of galaxy of enough visual observation, but can have observation to the other galaxy outside the galaxy however, and the observation that passes pair of other galaxy, we were informed galaxy roughly athletic way and appearance appearance, go up in astronomy so, the appearance according to galaxy can be galaxy cent shape of elliptic, gyroidal, lens and irregular form galaxy. Later, scientists have observation to the galaxy through radio telescope, after collecting much data, in the course complex astronomy is deduced reached of the galaxy roughly structure, two words, say this process simply, but actually this process is extremely complex, because astronomical itself is an exceeding and rigorous science.
We can deduce the panorama of a galaxy, but however cannot true observation arrives it, this is a thing that fills a regret really, and the scientist's regret often needs an artist to fill neat, general the gyroidal galaxy picture that we see is not true picture actually, the hand that passes an artist however is depicted come out, although we cannot jump out,the galaxy appreciates the beauty of its helix, see a picture make sufficient also comfort all one's life. Be worth what carry is, as the progress of scientific progress and observation method, scientists discover a galaxy this gyroidal galaxy is not completely compressed actually, what it does not look on the earth like us is so smooth, existence also is on this flat surface actually of a large number of wave, it is us only cannot direct observation arrives.
