Many numbers of stars are held together in the universe due to their gravitational force and it is known as Galaxy. In galaxy, it consists of stars, planets, asteroids, etc. As planets revolve round the sun and sun revolves round the galaxy, galaxy also revolved the whole universe. According to scientist there are more than 50 billion galaxies in the universe. Among them one of the galaxies is our galaxy and it is named as Milky Way galaxy. Scientist have guessed that after many years of our universe made our galaxy is formed.
The nearest galaxy from our galaxy is Andromeda. This is much bigger than our galaxy. Andromeda is only the galaxy that we can see with our naked eyes. Our galaxy is named Milky Way only due to its milky color. Our galaxy can be seen with our naked eyes in clean sky at night. It is seen milky & bright in the central region and going on in outer extending part it is seen dirty & dark. The mid part of galaxy that we have seen from Earth has the distance about 30 thousand light year. The dear and bright parts of galaxy that we can see from earth only have million & billion stars. The sun & stars we see in the sky is one part of the 200 billion stars of our galaxy. From the one end of a same galaxy to other end, light need more than lakhs years with this we can guess that how large is the galaxy.
About galaxy different persons have given their different thoughts from ancient time. Different secret story are also made about it. Many of the countries, people believe that galaxy is the heaven we go after out death. According to Greek, Galaxy is made by the split of Goddess ‘Hera’. The person who seriously thought about galaxy is scientist Galileo Galilee. In 1610 A.D., with the help of telescope he first looked the galaxy nearly. At that time he has purposed that galaxy is made with different dim stars. And it is proved by other different geologist after some years.
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