Facts about the star may yet known.

Facts about the star may yet known.
The sky is the most interesting to watch. A lot of inspiration that comes from the sky observations, and humans have never run out of ideas to explore the sky, every day always just discovered new knowledge. There will be no end to the science of the sky, perhaps for human life on earth, we will always look for the secrets of the sky that has not been revealed.

About the secrets of heaven and the objects contained in it, there are celestial bodies that humans are the most frequently observed stars. In this universe there are billions of stars like our sun. But the size and properties that have many differences and special characteristics. After collecting from various sources, some interesting facts about the stars that will be described here.

  

The facts are:

    1. Actually very few number of stars we can see with the naked eye, the rest of us can not see because it is far away and not bright enough. Of all stars visible apparently larger and brighter than the sun. More than 5,000 stars have brighter light that is the scale of more than magnitude 6, only a handful of very faint having the same size as the brightness of the sun, the rest are all bigger and brighter. Only 50 of the brightest stars are visible to the human eye from Earth, and the most bright star is Alpha Centauri star, 1.5 times more luminous than our Sun.

    2. If anyone tells you that he has been counting the millions of stars just see with the naked eye, immediately leave him, because what he said was a lie. In fact, you may not be able to see millions of stars in the dark night perfect though. You can not see a million stars in the surface anywhere on earth. In the evening a truly remarkable bright with no clouds, no moon and no light at all bullies, someone with very good eyesight, may only be able to see the stars at the time 2000-2500.

    3. Myth red color of a flame is the hottest area, was wrong. Red is the lowest temperature at which a body is heated to glow in visible light. When heat continuously improved color changes to white and finally to blue. So you see a red star in the sky that seem "cool" is the biggest star is not hot, blue stars are the hottest stars.

    4. Basically all star is a black body. In physics, a black body is an object that absorbs 100 percent of all electromagnetic radiation (light, radio waves, and so on). Like a brick oven with a painted black interior and only has a small window. All the light that shines through the windows is absorbed by the interior of the oven and not reflected outside the oven. This is a perfect absorber. This definition is in accordance with the conditions of perfect absorbers have a very good star. However, the amount of energy absorbed by the star is not proportional to the amount of energy emitted. That is, the star is a black body shining with great brilliance. In the reverse comparison occurred on Black hole sun, the amount of energy absorbed is greater, it is because the weight of a very massive star.

    5. There is no green stars, although there are claims of stargazers who looks green, including Beta Librae (Zuben Eschamali). Most observers did not see was green except the telescope optical effects. In physics this can be explained by the theory of the optical spectrum through. The fact that the star has a common color, from low temperature to a higher temperature, ie red, orange, yellow, white and blue. So there is no green stars.

    6. The sun is the star of "dwarf". For those of us who are accustomed to think of the Sun as "normal", begin to change. But the good news is, that our sun is still young. In general, the size of the age by starting from "dwarf," "Giant" and "super-giant" (supergiants). The next stage is to decay, supernova and star death. So technically, the Sun is a dwarf star, which continues to expand.

    7. Black holes do not "suck"?? Many people often describe as a black hole that sucks the hole and take everything around him. And it is a common concern for mankind, consider a black hole as a threat to the future existence of the earth when it was too close to him. But in fact, for some reason, black holes are generally not "suck." This is not just a difference in definition, as in the workings of a vacuum cleaner, not the same as how black holes attract matter. In a vacuum, so the vacuum fan produces air pressure outside becomes larger, pushing air into it, bring along loose dirt and dust. In the case of a black hole, there is no suction process involved. Instead, the material is pulled into the black hole with a gravitational pull so strong. In one way to visualize it, like falling into a hole. Gravity is a fundamental force of Nature and all the material has it. When something is pulled into the black hole, the process is more like a fish drawn by anglers. The difference may seem trivial, but from the point of view of physics, it is fundamental. So black holes do not suck.
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