All we used to watch the daily bright heavenly body, bestowing us warmth and light.But everyone knows what the Sun?How is it organized and what it represents?
Sun - the closest star to Earth, it occupies a central place in the solar system.It is a huge ball of hot gas (mostly hydrogen).Dimensions of this star so large that it could easily accommodate a million planets like our own.
sun played a crucial role in the development of life on our planet and created the conditions for the formation of other bodies of his system.Watching the sun at all times been an important activity.People are always aware of its life-giving power, it is also used for the calculation of time.Interest in solar energy and its possibilities is growing every day.Heating from the sun with the help of collectors is growing in popularity.Considering the price of natural gas, this free alternative is even more enticing.
What is the Sun?Always Does it exist?
it shines, as we found out scientists for many millions of years and appeared with the rest of the planets from a huge cloud of dust and gas.The spherical cloud is compressed and intensified its rotation, then it turned into the drive (under the influence of centrifugal forces).All material clouds moved into the center of the disc to form a ball.Thus, probably originated sun.At first, it was cold, but the constant compression made it progressively hotter.
imagine that the sun is really very difficult.At the heart of this massive self-luminous body temperature reaches 15000000 degrees.The radiating surface called the photosphere.It has a granular (granular) structure.Each such "grain" is brought to the surface the size of a red-hot substance Germany.Often on the surface of the Sun can be observed dark regions (sunspots).
Thermonuclear reactions on the Sun release unimaginable amount of energy that is radiated into space in the form of light and heat.Everything else, from this incredible rushes and the solar wind (a stream of particles).
Without the sun there would be no life on our planet.But along with the warmth and light it emits, and other forms of energy, such as X-rays and ultraviolet rays, which are a threat to all living things.The ozone layer protects us without missing much of the dangerous rays, but still a part of them is, as evidenced by sunburn on our skin.
most powerful manifestation of solar activity - a flash.In fact, an explosion caused by a plasma substance under the influence of a magnetic field.Although the outbreak has not yet been thoroughly studied, their appearance certainly has an electromagnetic nature.
Even pre-schoolers know what sun.But few people even thinks about large-scale processes that occur at this fireball every second.The sun is not always so.Its fuel capacity - about 10 billion. Years.To find out how much it will warm us and shine, we need to specify what part of the life they have lived.Lunar rocks and meteorites not more than 5 billion. Years, mean age of the sun and the same.
Previously thought that it would just fade away and cool.Who we found out that this process will not be calm and quiet, "dying" star is waiting for a real agony.When the kernel is completely burned, the fire would start to devour the sun's outer layers.The sun will turn into a massive red star that will engulf Mercury and Venus and the Earth will warm up to enormous temperatures.The water will evaporate, life would cease to exist.Then there will a new energy source in the outer layers of the Sun - helium.The shell falls, the core will shrink to the point of the white dwarf.
