Why are the stars shining?

Why are the stars shining?

  1. I'm not lazy ...
  2. Reflect the power of the SUN ...
  3. Heat-junction synthesis.
  4. Because they are all - the Sun! Only very far from us and seem small.
  5. then this is someone you need!
  6. There are no stars in the sky,
    It's just a million holes,
    And light breaks through them:
    It shines another world.
    There, behind a dark veil of darkness,
    The unspeakable beauty of the Garden,
    Where and then we will meet,
    If you do not suddenly fall into hell!
    (с) Victor Tretyakov.
  7. The fact is that the star is a huge ball, consisting of hot gases.
  8. A hundred plus years ago, two great minds of the time Helmholtz and Kelvin seemed to have solved the riddle. The stars are huge clots of gas. Compressed by gravity, they heat up to millions of degrees and heat the universe. But .... calculation showed that under this scheme of work our Sun had to expend all its energy long before the first glimpses of life appeared on our planet.

    Then came the turn of another point of view: the stars began to be considered first nuclear, and then thermonuclear! : reactors. But even here everything is not all smooth: experiments and calculations show that the temperature inside the Sun is much less than what is required to maintain a thermonuclear reaction.

    Thus, it turns out that the missing energy is taken from the surrounding space. However, space itself can not be a source of energy, it is passive enough for this. But, on the other hand, space is inseparable from time.

    The law of conservation of energy was derived in the 17th century as a result of numerous experiments with various moving bodies. By the middle of the XIX century, this law was spread; not only on purely mechanical movements, but also on other types of processes, in particular thermal ones. It is no accident in thermodynamics this law is called the first principle, thereby emphasizing its importance.

    But the second law of thermodynamics, says that heat (energy) from. system somewhere all the time flows away. Where? What does it go into? There is as yet no exact answer to these questions. But this does not mean that the law of conservation of energy in the universe is violated.

    Stars are huge gas balls that emit their own light, unlike planets and their satellites, glowing with reflected stars. For example, moonlight is nothing but the sunlight reflected by the moon. Another difference is that it seems to us that the stars are flickering, while the light of the planets is even and unblinking. The flickering of stars is caused by the presence of various substances in the earth's atmosphere.

    Our Sun is also a star, although not too big or bright. In comparison with others, it occupies an intermediate position in these parameters. Millions of stars are much smaller than our Sun, while others are much larger than ours. Among them there are those who, being in the place of the Sun, would include the orbits of not only Earth and Mars, but even Jupiter! However, they still seem to us small points because of a very large distance.

    Since the time of the ancient Greek astronomers, stars are divided into groups according to their magnitude. Under the concept of magnitude, here is understood not the true dimensions of the stars, but their brightness. In addition, the stars differ in their spectra or, in other words, in the wavelengths of their radiations. Studying the spectrum of a particular star, astronomers learn much about its features, temperature and even chemical composition.

    Thus, the stars in the likeness of our Sun illuminate the Universe around them, warm them, surround them, planets, give life. Why do they only shine at night? No, no, they also shine during the day, they simply can not be seen. In the daytime, our sun illuminates the blue atmosphere of the planet with its rays, because of which the cosmos hides behind the curtain. At night, this veil opens, and we see all the splendor of the cosmos of the star, galaxy, nebula, comet and many other miracles of our universe.

  9. Stars are huge gas balls that emit their own light, unlike planets and their satellites, glowing with reflected stars. For example, moonlight is nothing but the sunlight reflected by the moon. Another difference is that it seems to us that the stars are flickering, while the light of the planets is even and unblinking. The flickering of stars is caused by the presence of various substances in the earth's atmosphere.
    Our Sun is also a star, although not too big or bright. In comparison with others, it occupies an intermediate position in these parameters. Millions of stars are much smaller than our Sun, while others are much larger than ours. Among them there are those who, being in the place of the Sun, would include the orbits of not only Earth and Mars, but even Jupiter! However, they still seem to us small points because of a very large distance.
    Since the time of the ancient Greek astronomers, stars are divided into groups according to their magnitude. Under the concept of magnitude, here is understood not the true dimensions of the stars, but their brightness. In addition, the stars differ in their spectra or, in other words, in the wavelengths of their radiations. Studying the spectrum of a particular star, astronomers learn much about its features, temperature and even chemical composition.
    Thus, the stars in the likeness of our Sun illuminate the Universe around them, warm them, surround them, planets, give life. Why do they only shine at night? No, no, they also shine during the day, they simply can not be seen. In the daytime, our sun illuminates the blue atmosphere of the planet with its rays, because of which the cosmos hides behind the curtain. At night, this veil opens, and we see all the splendor of the cosmos of the star, galaxy, nebula, comet and many other miracles of our universe.
  10. I only know that light consists of many photons. . Well, the light of the star is the result of the reaction of the star On all the questions you can find answers to the transfer of the extreme Hubble frontier, by the way on the video of Maya I watched this video. It is enough to enter in the search "Hubble"
  11. They consist of gases that react with each other, releasing huge amounts of energy in the form of light and temperature.

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