Studying astronomy (science about celestial bodies), you will repeatedly meet mentions of the Milky Way. The Milky Way is a congestion of stars, a so-called star system in which we live.
Instruction
1. The brightest star in our Galaxy – the Sun around which the mother Earth rotates. Stars of the Milky Way are at different distance from the Earth's surface. Some of them are divided by 100 light years, others are removed from us on tens of thousands of light years.
2. Scientists claim that in the Milky Way there are 200 billion stars from which only 2 billion can be seen in the most modern telescopes and only dozens – with the naked eye. All of them more or less remind the Sun (some stars differ in the big size, but there are also absolutely tiny asterisks). The hottest stars can be determined by their pale blue luminescence. Temperature of their surface fluctuates from 20,000 to 40,000K. The coldest stars have red color. Their temperature is equal about 2500K.
3. Stars of the Milky Way live life everyone: arise from interstellar gas, form a mass congestion, burn and burn down. Because of periodic flashes they become noticeable to a human eye, more precisely, we see not so much stars, how many the general luminescence. The Milky Way seems to us a star footpath in the sky, similar to The White gas Ribbon.
4. The biggest congestion of stars is located in the center of the Galaxy. They can be scattered and spherical. Scattered congestions of stars – the youngest. Their middle age – 10 million light years. Spherical congestions – older. Since that moment as they were beaten to each other, there passed about 15 billion years. In other words, spherical congestions consist of the oldest stars of the galaxy among which low-massive prevail.
5. Best of all to consider the Milky Way, you will need to go to Far North. Exactly there the night star sky will appear before you in all beauty. But it is impossible to see at once all stars of the Milky Way as they are located on two terrestrial hemispheres.