General Information for beginners astronomy
In the name of God the Merciful
About this simple walking in new astronomy introduced them to the universe on ABC
Universe
Includes all existing universe, from the most accurate atomic particle without the crowds Hungarian super No one knows how big the universe, that a broader prevalent theories about the evolution of the universe is Alanfjarkabar theory, which says that the universe has arisen as a result of a massive explosion - the Big Bang is - has happened since 10 to 20 billion years ago
In the beginning was the universe in the form of a fireball extreme density and heat, consisting of a gas expands and cools down after a million years ago began the gas condenses, probably, according to the blocks local are harbingers of galaxies and after billions of several years, is still the universe is expanding, despite the existence of places contain objects stick to each to each other by gravity as many galaxies arrayed for example, does not know astronomers after if the universe is "closed", ie it may stop at last for expansion and begins to shrink, or "open," meaning that spans will continue to no end
Galaxies
Galactic enormous mass of stars and nebulae and interstellar material scattered
There are three types of galaxies have been categorized according to their shape:
-elmejrat-Shaped Albbi
- And spiral galaxies that have arms wrapped spiral outward from a central bulge
- And irregular galaxies that have no definite shape and clear
However, the shape of the galaxy may sometimes distorted as a result of a collision with another more or less
The quasars are compact objects, intense lighting, believed to be the nuclei of Hungarian, but it is far to the extent that it is hard to determine exactly what Hatha, as they fall outside the scope of the known universe, the farther quasars (quasi-stars) known to exist at a distance of 15 billion light-years away, It is widely believed that the rays emanating from active galaxies, quasars and black holes caused by
Milky Way
The Milky Way is the name given to the dim light strip, stretching across the night sky from side to side and kicks off this light from stars and nebulae in our galaxy, which is known as the Milky Way
The Milky Way spiral shape consists of a bulging central dense, surrounded by four arms wrapped around the outside and hemmed aura less intensity can not watch spiral shape, because the solar system is located in one of the spiral arms, an arm of the mighty (or arm local also sometimes called), from this website, obscured by dust clouds center of the galaxy in a manner not quite give him maps the visual scene is limited only to the Galaxy
The central bulge of small ball and relatively dense, containing mainly on the old stars with rays of red and yellow The aura they area is less dense and contains the stars most forward, some of these stars as old as the galaxy itself 15 billion years may contain spiral arms mainly on blue stars are hot and young and nebulae (pull gas and dust are formed stars) galaxy enormous breadth spin the galaxy as a whole in space, although the star of Interior released faster than the speed of stars of Foreign Affairs, the sun, which is two thirds of the distance from the center outward, they complement one cycle around the galaxy every 220 million almost a year
Nebulae and star clusters
Nebula cloud of dust and gas located within the galaxy are nebulae visible when the glow of gas formed by or if reflected Shaptha starlight or blocked light from objects more distant shining nebulae scholarship because the gas is called light when stimulates by the radiation released by the hot stars and young The nebulae reflectance Vttalq because dust reflects light emanating from the star is located inside or around the other hand, looks dark nebulae in silhouette as they obscure Aldualmntaleg of nebulae or Sparkling stars of fall behind
There are patterns of nebulae associated with star dead: planetary nebulae and residues supernovae (exploding stars) consists of both types of remnants of Gulf gas expansive - planetary nebula - the cover Ghazi drifted away from the core of the astral dead either backward supernova - it is the cover of Ghazi out away from the core of the astral quickly Kberhather a huge explosion, is the explosion of supernova itself collects the stars often in groups known as crowds astrocytes can distinguish between star clusters scattered which are groups of loose, where a few thousand of young stars emerged in the cloud itself and then divide each away from each other and the crowd stellar career - compacted density, which is in the form of semi-spherical Mmjmoat where hundreds of thousands of old stars
Stars
Stars bodies warm and glowing gas originated within the nebula
Stars differ among themselves very different in terms of size, mass and temperature
Color is determined by temperature-star: the highest temperature of the stars are blue and red the lowest ones of the sun, the surface temperature varying the five thousand and five hundred, located between the two terminals and Class looks yellow in color
Resulting energy released by the brilliant star for nuclear fusion is located in the core of the star
The main sequence stars of the main groups (those that integrate hydrogen to be helium) and giant stars and the stars above and the giant white dwarfs
Neutron stars and black holes
Consisting of neutron stars and black holes of cores of stars that remained after the explosion in the form of a super Mstarat
If the mass of residual pulp sandwiched between solar masses and a half and three solar masses almost
It shrinks and be a neutron star, but if its mass is much larger than three solar masses
It shrinks and becomes a black hole
The diameter of the neutron star is about 10 km away
It consists almost entirely of subatomic particles called neutrons
These stars are so dense weighs teaspoon of its article around a billion tons
Neutron stars are monitored in the form of a vibrant radio sources, which are also called as it rotates on its axis at an absolute two packages Tendfan waves across the sky and are detectable heartbeat pulses are short
On the other hand, is characterized by black holes strongly attracted which amounts to an end can not be with him until the rays of light that escapes from them, so black holes remaining objects invisible
However, it can be exposed in the event of a star facilities near them, so that black holes pulls gas from the star Vinjzb to the other, forming an accretion disk around the black hole lasts very quickly the temperature rises and called radiant energy
Finally, the last article invasive inward and cross the event horizon - the limits of the black hole - and disappear so completely from the visible universe
Bruges sky
Zodiac configurations asterisk beautiful we see every day in the sky in various places and situations, it is not necessary to associate any physical relationship,
This means that most of these stars are not usually close but not located in a stellar one, some one-star tower may be relatively close to Earth, while others are located relatively far distance. All we know about it one star tower
Look from the ground in the same direction
