One among objects in the sky can be seen from the face of the earth at night.
So, what is it star?
First, the star in the science of astronomy is defined as the celestial objects that can emit light and produce its own energy, for example the sun.
Second, the definition of a star is a planet or a cluster of planets which became the handle in astrology.
Usually to determine a person’s fate or also called constellations.
Meanwhile, quoted from the official site of the National Aeronautics and Space Administration (NASA), the star is an astronomical object is the most widely known and represent the building blocks and the galaxy’s most fundamental.
A star is a ball of glowing gases in which most of the elements of the star-forming namely hydrogen and helium held together by its own gravity.
The temperature is very high in the core, resulting in nuclear fusion, energy yield.
The pressure outside the gas is heated by the fusion offset by the pull of gravity to the inside, making the stars are in hydrostatic balance.
The balance of hydrostatic forces lasted for most of a star’s life, maintain the temperature of its permanent.
Radiation and convection carries the energy from the core out through the atmosphere of the star.
When the energy becomes high in the atmosphere, the region above it transparent.
Then he was out into space as the light of all wavelengths as well as the stellar wind.
Though the stars may look still in place (static), but star-the star is rotating and the level of luminosity (light) stars vary.
There are a hundred billion stars in the Milky way Galaxy.
Among these are the sun, the nearest star to the earth, a place of human habitation.
The origin of the stars
Each of the stars are formed in clouds of gas and dust.
Over time, gravity causes cloud to contract, which makes the gas is getting closer and close.
The more gas that accumulates in the heart, then it becomes more dense and the pressure increases.
This causes it to heat up and start to shine.
Gravity constantly pulls the gas and dust.
The increase in mass and similarly the pressure and the temperature.
Finally, its center reaches millions of degrees celsius.
Hot enough to fuse hydrogen nuclei and produce powerful energy.
The heat generated nuclear fusion causes the gas in the center of the star expands, the pressure out.
When the hydrostatic balance is achieved, a star was born.
Nuclear fusion power the stars until one day finally run out of fuel and die.
Most stars form in groups of a solid that is called a cluster of stars (star clusters), from which the majority of the issued.
Variations stars
Even though it looks like a point of light of the same from the point of view of man on earth, is actually the stars differ from each other in many ways.
The stars vary in terms of as follows:
1. Mass
2. Size
3. Temperature
4. Color
5. Luminosity
6. Age
7. Distance from earth
8. Orbit
The stars also change during the life span.
The mass of the star determines the temperature and luminositasnya as well as how a star will live and die.
Stars more massive stars are hotter burning.
The faster using the fuel and the more short-lived.
The hottest stars and the most massive blue and bright.
Then, the stars most cool and less massive red-colored and dim. The need for digital IT is needed in daily activities, Bead IT Consultant is the right choice as your partner, visit our website by clicking this link: www.beadgroup.com