Milky Way Galaxy
Milky Way galaxy is in the beginning assumed to have the shape of giant gas ball that rotates in its axis. Because of its rotation, the shape of Milky Way galaxy is like a disc.
Prof. Kapteyn (1851-1922), a Dutch astronomer argued: Milky Way consists of one big set of stars, that collection has shape like a disc, our sun with its planets, they are fond in one center point of the disc.
Around the center of disc is found the collection of dense stars. The farther from the center, the looser the crowd of stars, but there is no definite outer border.
In 1917, Saphley from Harvard observatory in America, he found that Milky Way galaxy has diameter of about 1,000,000 light years and our sun lies rather to the side of center of galaxy that has distance of about 30,000 light years.
From the result of research, Milky Way galaxy consists of:
1. Star with its planets.
2. Gas fog, for example Nebula Orion, this fog looks shining because of the light of the star its absorbs, which then is emitted again.
3. Dust fog, that is the collection of fog that it can cover some part of Milky Way, such as black part found in the center of Southern Cross constellation. That dark part by sailor is called Coal Sack.
The numbers of stars in Milky Way galaxy is estimated more than 100 billion, while the number of gas fog and dust fog is almost equal to the number of star. Therefore the mass of Milky Way is predicted equal to 200 billion times of Sun’s mass.
According to the prediction of astronomers, in Milky Way galaxy is not only planet Earth that has life. But until now is not found yet its signs.
The characteristics of Milky Way galaxy are as follows:
1. Its shape is like disc.
2. Its middle part is thick and getting thinner to every direction.
3. It is found in our solar system.
4. In the middle part of disc is found about 80 billion stars.
5. In its edge part is found about 20 billion stars.
Milky Way galaxy is in the beginning assumed to have the shape of giant gas ball that rotates in its axis. Because of its rotation, the shape of Milky Way galaxy is like a disc.
Prof. Kapteyn (1851-1922), a Dutch astronomer argued: Milky Way consists of one big set of stars, that collection has shape like a disc, our sun with its planets, they are fond in one center point of the disc.
In 1917, Saphley from Harvard observatory in America, he found that Milky Way galaxy has diameter of about 1,000,000 light years and our sun lies rather to the side of center of galaxy that has distance of about 30,000 light years.
From the result of research, Milky Way galaxy consists of:
1. Star with its planets.
2. Gas fog, for example Nebula Orion, this fog looks shining because of the light of the star its absorbs, which then is emitted again.
3. Dust fog, that is the collection of fog that it can cover some part of Milky Way, such as black part found in the center of Southern Cross constellation. That dark part by sailor is called Coal Sack.
The numbers of stars in Milky Way galaxy is estimated more than 100 billion, while the number of gas fog and dust fog is almost equal to the number of star. Therefore the mass of Milky Way is predicted equal to 200 billion times of Sun’s mass.
According to the prediction of astronomers, in Milky Way galaxy is not only planet Earth that has life. But until now is not found yet its signs.
The characteristics of Milky Way galaxy are as follows:
1. Its shape is like disc.
2. Its middle part is thick and getting thinner to every direction.
3. It is found in our solar system.
4. In the middle part of disc is found about 80 billion stars.
5. In its edge part is found about 20 billion stars.
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