wholesale jewelry supply co. cranston ri What is the galaxy

origin jewelry wholesale Definition of scientific and technological noun
The Chinese name: Galaxy definition: usually from hundreds of millions to millions of stars and interstellar material composition, spatial scale, and thousands of to hundreds of thousands of light years. The subject: astronomy (first -level discipline); galaxy and the universe (secondary discipline)
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Encyclopedia
star or galaxy, so The "island" of the huge stars in the universe is also one of the largest and most beautiful celestial systems in the universe. So far, people have observed about 10 billion galaxies at the universe. Some of them are closer to us and can clearly observe their structure; some are very far away. At present, the farthest galaxy is nearly 15 billion light years.

Catalog

The introduction
The feature
Observation brief history
galaxy classification

Differential and definition
The evolution of the galaxy
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The editor
Introduction

γαλαξία 参), referring to our galaxy, is a large quality system that contains stars, gases, cosmic dust, and dark matter, and is bound by gravity. The typical galaxy, from the dwarf system with only tens of millions of (107) stars to the elliptical galaxy of the icons (1012) stars, all operate around the center of quality. Except for separate stars and thin interstellar substances, most galaxies have large number of multi -star systems, star groups, and various nebulas.
galaxies
Historically, galaxies are classified according to their shape (usually referring to their visual shapes). The most common is the elliptical galaxy, with a bright appearance of the oval shape; the spiral galaxy is the shape of the disc, plus the curved dust of the vortex; the irregular or abnormal shape is usually the result of the affected by other galaxies. The interaction between the adjacent galaxies may cause the merger of the galaxy, or cause a large number of stars to become a so -called star explosion galaxy. The lack of a small galaxy will be called irregular galaxies.
In observed universe that can be seen, the total number of galaxies may exceed 10 billion (1011). Most of the galaxy diameter is from 1,000 to 100,000 seconds gap, and the distance between each other is a magnitude of a million seconds gap. The interstel space (space between galaxies) is full of thin plasma and average density is less than one atom per cubic meter. Most galaxies will organize a larger group and become galaxies or groups, and they are gathered into a larger super galaxy group. These larger groups are usually called thin slices or fibers, surrounded by huge empty caves in the universe.
Although we have little understanding of dark matter, it has about 90%of the quality in most galaxies. The observation data shows that the ultra -heavy black hole is in the core of the galaxy, and even if it is not all, it accounts for the vast majority. They are considered the main cause of the core of some galaxies. The galaxy, the galaxy of our earth and the solar system, seems to be at least one such object hidden in the core. [1]
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Features

The size of the galaxy is very different. The diameter of the oval galaxy is between 3,300 light years and 490,000 light years; the diameter of the vortex galaxy is between 160,000 and 160,000 light years; the irregular galaxy diameter is between 6,500 light years and 29,000 light years.
The quality of the galaxy is generally between 1 million and 1 mega.
The stars inside the galaxy are moving, and the galaxy itself is rotating, and the entire galaxy is also moved in space. Traditionally, astronomers believe that the rotation of galaxies, the ratio of clockwise and counterclockwise is the same. However, according to the observation of Galaxyzoo, a distributed project in a galaxy classification, there are more galaxies rotating counterclockwise.
The galaxy has a red shift, indicating that these galaxies are getting farther and farther from us in the direction of space. This is also a powerful evidence of the Big Bang theory.
The galaxy is close to the large scale distribution; but the small scale is very uneven. For example, the Dagen galaxy and wheat Zhelun galaxy form a dual galaxy, and they also form a triple galaxy with the galaxy.
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Observation brief history

The survey of our own galaxy and other galaxies began to start a report from James Bi Ni and Michael Mali Feld : Galaxy astronomy ().
found
In 1610, Galileo used his telescope to study the bright belt in the sky, which was known at the time, and found that it was a large but light -light star gathered. Essence In a dissertation in 1755, Emmanuel Kant, drawing on a sketch of the earlier work worked by Thomas White. It is speculated that the (correct) galaxy may be rotated by a large number of stars and gathered through gravity traction. Together, just like our solar system, the scale is larger. The stars are gathered into a disc, and the effect of the perspective in the disk will be regarded as a light belt in the night sky. Kant also guess some nebula seen in the night sky may be independent galaxies.
Differentiated
When the end of the 18th century, Messier completed the Messier directory and included 103 bright nebula. Soon after, William Hedor also completed a catalog of up to 5,000 nebula. In 1845, Lord Rose built a new telescope to distinguish the elliptical galaxy and spiral galaxy. He also found some independent points in these nebula and provided evidence for Kant's earlier statement. However, Nebula has not been able to obtain unanimous approval as a distant galaxy, and it was not confirmed until the early 1920s used a new big telescope. Harbah distinguished the separate stars in the periphery of the spiral galaxy, and identified some of them as the formation of the father. Therefore, the distance of these nebulas can be estimated: their distance is too far away, so it cannot be part of the Milky Way.
The description
In 1936, Herba formulated the galaxy classification method that is now known as the Habbing sequence and is still used. The first astronomer who tasted

The trial description of the shape of the Milky Way and the solar location was William He Xiel. He carefully calculated the stars in different areas in the sky in 1785 The number was obtained by the elliptical galaxy of the solar system in the center, which is very similar to the results obtained by Caputan in 1920, but it is relatively smaller (the diameter is about 15,00 seconds gap). Harlo Shapeli used another different method to be built on the distribution of the ball -shaped star group and got a completely different image: a flat plate shape with a diameter of about 70,000 seconds, and the sun was far from the center. However, neither analysis of the two considers the amount of light absorption caused by interstellar dust on the surface of the galaxy; once Robert Juliezzhuzhuzer has determined this role in 1930, we now recognize it The galaxy patterns emerged. In 1944, Hend Like Herst predicted that the hydrogen atom would radiate a 21 cm wavelength microwave, and in 1951, it was found radiation from interstellar hydrogen atoms. This radiation allows more in -depth research on galaxies because he will not be absorbed by interstellar dust, and the displacement from his Dabre can porta the motion of gases in the alien. These observations lead to the assumption of rotation, distinguish the stick -shaped structure of the galaxy center, and combined with radio telescopes, hydrogen atoms in other galaxies can also be tracked. In 1970, Vera Rubin's research found that the total quality (stars and gases) visible by galaxies could not properly explain the rotation speed of the gas in the galaxy. Now the problem of galaxy rotation has been used to explain a large number of dark matter that has not been observed.
Since the 1990s, the Haber Space Telescope has improved the benefits of observation, especially if he confirmed that the mysterious dark matter cannot be the dark small celestial body in the galaxy. Haber's deep space, a long period of exposure to a area of ​​the sky, provided possible evidence of as many as 175 billion galaxies in the universe. Improvement of unwanted spectral detection technology (radio telescope, infrared camera, X -ray telescope), so that humans can see other galaxies that Lianhaba Space Telescope is invisible. In particular, the galaxy patrolling the galaxy in the sky (the part covered by the galaxy) in the sky exposes a considerable number of new star systems.
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galaxy classification

The galaxies are mainly divided into three categories: elliptical galaxy, spiral galaxy and irregular galaxy. The clearer and extensive description of the galaxy type will be described in the entry of the Haber sequence. Because the Haber sequence is based on the visual form, he may miss the important features of some galaxies, such as the star formation rate (the core of the star explosion galaxy or active galaxy).
Ben according to the classification method of the Haba, the type E of the galaxy indicates the oval galaxy, S is a spiral galaxy, and SB is a rotal galaxy.
Matular galaxy
Haba classification method is classified according to the estimation of the elliptical elliptical rate of the elliptical galaxy. From E0, it is close to circular, to E7, very thin. These galaxies, regardless of the perspective of sight, have an oval appearance. They seem to have no structure, and relatively few components of interstellar substances. Usually these galaxies have a small amount of evacuation star group and a small number of newly formed stars. They are replaced by the elderly and are mainly mature stars that are surrounded by galaxies in various directions. Some of their properties are similar to many small ball -shaped stars.

"Hubble Deep Space" photos
Most of the galaxies are elliptical galaxies. Many elliptical galaxies believe that through the interaction of galaxies, collisions or mergers. They can grow into a large volume (compared with spiral galaxies) and huge elliptical galaxies often appear in the center of the galaxy group. Star explosive galaxy is the result of galaxy collision, which may lead to the formation of huge elliptical galaxies.
type
The ellipse galaxy is divided into seven types. According to the flat rate of galaxy ellipse, it is represented by E0-E7 from small to large. The maximum value 7 is arbitrarily determined. This classification method is limited to the shape of the galaxy seen from the earth, because it is difficult to determine the angle of the elliptical galaxy in the space.
The irregular galaxy does not have a certain shape, and it contains more dust and gas, which is represented by IRR. Another type of lens galaxy represented by S0 indicates the transitional galaxy between the elliptical galaxy and the vortex galaxy.
The NGC4552 of the E0 oval galaxy. The galaxy is located in the room.
NGC4486, which is also located in the room, belongs to the E1 ellipse galaxy.
NGC4479 belongs to the E4 elliptical galaxy, located in the room of the room.
NGC205 oval galaxy, which belongs to the E6, is located in the fairy seat.
NGC3115, which is located in the six -point instrument, belongs to the E7 ellipse galaxy, and also attributed it to S0.
The spiral galaxy
In the spiral galaxy, the shape of the spiral arm is similar to the number snail line, which theoretically shows that this is a kind of interference mode caused by a large number of stars. Like a star, the spiral arm also rotates around the center, but the angular speed of the rotation is not a constant, which means that the star will cross the spiral arm, and the spiral arm is a high density area or a density wave. When the stars enter the spiral arm, they will slow down and create a higher density; this is similar to the speed on the highway on the highway. The spiral arm can be seen because high density promotes the birth of the stars here, so there are many bright and young stars on the spiral arm.
This galaxy, galaxy, sometimes referred to as the galaxy, is a stick galaxy with a huge galaxy disk. It has the quality of about 300 billion stars (3 × 1011) and about 600 billion sun.
The vortex galaxy
(SPIRAL GALAXY, S-Type Galaxy) The river system with a vortex structure is called a vortex galaxy, which uses S in Hubble's galaxy category. The spiral shape of the spiral galaxy was discovered at the earliest when observing the hound galaxy M51 in 1845. The center of the spiral galaxy is a lens, surrounded by flat discs. A number of screw -shaped arms are extended from the ends of the uplink nuclear balls, which are superimposed on the galaxy disk. Spiral galaxies can be divided into two types: normal vortex galaxy and rod galaxy. Classified by Hubble, the normal vortex galaxy is divided into three types of A, B, and C: SA -type central area large, sparsely distributed with tight roll arm; ; The central area of ​​SC is a small bright nucleus, with large and loose arms. In addition to gathered high -light O, B, super superstar, and ionizing hydrogen areas on the arms, there are also a large amount of dust and gas distributed on the galaxy disk. From the side, it is presented as a narrow dust belt on the main level, with obvious lighting phenomena. The vortex galaxy usually has an overall, sparse dizziness, called galaxy halo. Among them, the Star II celebration, its typical representative is the spherical star group. A medium -quality vortex galaxy often has 100 to 300 ball -shaped star groups. Randomly scattered in the space around the galaxy disk. In the past, there may be a thinner gas ball, called galaxy halo. The quality of the vortex galaxy is one billion to 10 trillion solar quality, and the corresponding light is absolute star waiting -15 ~ -21 and so on. The diameter range is 5 ~ 50kpc. The total spectrum type of SA galaxy is K, SB type is F ~ K, SC type is A ~ F. The main celestial bodies that produce the total spectrum include both high -light early stars and high -light late stars. Star Ⅰ celestial body composition galaxy disk and rotation arm.
The rod galaxy
(Barred Sprial Galaxy, SB-TYPE GALAXY) The galaxy of the rod is a spiral galaxy with a long stick shape in the center. The center of the galaxy is a rod shape, and the rotation arms are stretched outwards on both sides of the stick.
The vortex galaxy is divided into two ethnic groups. The family is a rod galaxy with a stick -shaped structure in the center. It is represented by SB;
The other is a rotor -shaped galaxy with a stick -shaped structure. It is represented by S. These two types of galaxies are subdivided into three sub -types, respectively, respectively, and the tightness of the size of the galaxy nucleus and the tightness of the galaxy nucleus is used.

The most perfect ring galaxy
Type:
Then NGC3623 in Leo, which is a SA -type vortex galaxy.
The SB -type NGC3627 vortex galaxy, located in Leo.
NGC3351 is located in Leo and belongs to the SBB type rotal galaxy.
SBC rod galaxy NGC3992, located in Leo.
The dwarf galaxy
In ball -shaped star group halfman horses
Although the oval galaxy and spiral galaxy are obvious and prominent, most of the galaxies in the universe are dwarf galaxies. The size of one percent has only billions of stars. Many dwarfs may run around a separate galaxy, and our galaxy has at least one dozen dwarfs. The dwarf system can be divided into ellipse, spiral and irregular. Because the appearance of the low ellipse galaxy is a little similar to the large elliptical galaxy, they are often called a dwarf -like galaxy to replace it.
type
The NGC5194 vortex galaxy of the hound, belongs to the SC type. On the left is a dwarf.
Active galaxy
The some of the galaxies we observed are classified as active galaxies, that is, the total energy from the galaxy has another important source in addition to stars, dust and interstellar media. The standard model of active galaxy nucleus like this, according to the distribution of energy, believes that it is caused by the ultra -heavy quality black hole in the core area in the core area.
It X -rays, radiating high -energy galaxies is classified as Cetergal Star, Star -like, or Scorpion Tiger BL Star. Active galaxies that emit radio frequencies from relative jets erupted by the core are classified into radio galaxies. In the unified galaxy model, these different types of galaxies are explained as the result obtained from different angles.
In Irregular Galaxy, IRRR-TYPE GALAXY) is irregular, without obvious nuclear and spin arm,
galaxy
Symmetric structure or galaxy that cannot be seen by rotating symmetry is represented by letters IRR. Among the brightest galaxies throughout the day, irregular galaxies account for only 5%. According to the galaxy classification method, irregular galaxies are divided into two types: IRR I and IRR II type. Type I is a typical irregular galaxy. In addition to the general features of the above, some also have a hidden stick -shaped structure. They are dwarfs, with a quality of 100 million to 1 billion times the quality of the sun, and can also be as high as 10 billion times the solar quality. Their volume is small and the range of long diameter is 2 to 9,000 seconds. Star components are similar to SC spiral galaxies: O-B stars, ionized hydrogen areas, gas and dust and other young star i celestial bodies account for a large proportion. The II type has a non -fixed appearance, which cannot distinguish the composition of stars and star groups, and often has obvious dust belt. Some II -type irregular galaxies may be galaxies that are being erupted or exploded, and others are twisted by the gravitational disturbance of the galaxy. Therefore, the origin of type I and II irregular galaxies may be completely different. Type
The satellite "Damagelun Cloud" of the Galaxy is an irregular galaxy.
NGC3034 Irregular galaxy, located in the big bear constellation.
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Large -scale structure

The very few galaxies exist separately, which are usually considered as field galaxies. Many galaxies and a certain number of galaxies have the restraint of gravity. Groups containing about 50 galaxies are called galaxies, and they include thousands of galaxies, which are called galaxies groups spanning millions of seconds. The galaxy group is usually treated by a huge elliptical star system. His tidal force will destroy the neighboring satellite galaxy and add quality to the galaxy. Super galaxy group is a huge collection, with tens of thousands of galaxies, including galaxies, galaxies, and some lonely galaxies; at the scale of the super galaxy group, galaxies are arranged into thin slices and filaments, surrounded by huge empty holes. In the above scale, the universe presents the same or homogeneity.
Our galaxy is a member of this galaxy group. Relatively speaking, it is a small star group with a diameter of about 1.022 million seconds. Galaxy and fairy galaxies are the two largest galaxies in this group. Many other dwarfs are these two satellite galaxies. This galaxy group is part of the huge galaxy group and galaxy group collection centered on the female galaxy group.
The galaxy is distributed in the universe. From a large -scale perspective, the galaxy surrounds the blank area like bubbles, forming a structure similar to a spider web or neural network as a whole, which is called a large -scale distribution of the universe.
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formation and evolution

The formation of galaxies
The formation and evolution of galaxies have always been divergent. Some have been widely accepted, but there are still many people. question.

SB is a rod galaxy
The formation of galaxies contains two aspects. One is the theory of upper and lower, and the other is the theory of the bottom. The upper and lower theory refers to: galaxy is formed by a cosmic bang, which occurred hundreds of millions of years ago. Another doctrine refers to: galaxy is formed by the dust in the universe. The original universe had a large number of spherical star groups (). Later, these stars collided with each other and destroyed, leaving dust. These dusts have been combined to form galaxies.
, although many people have questioned the learning of galaxies today, it is probably in terms of galaxy formation research. With the deepening of research, it has extended to the evolution of galaxies. In astronomical physics, the problems of galaxy formation and evolution are:
• In a average universe, do we live in a unique and distinctive place?
• How is the galaxy formed?
• How does the galaxy change over time?
The evolution of galaxies
"Hubble Deep Space" photos
Chemorestram's first -generation galaxy theory, the first generation of galaxy was formed in the one billion years after the Big Bang. At the beginning of the birth of the universe, there was an outbreak of primitive energy. With the expansion and cooling of the universe, gravity began to play a role, and then the young universe entered a short stage of "skyrocketing". The micro -rise in the original energy distribution has also sharply enlarged from the micro -scale as the increase in the universe, thus forming some "ditch", and the galaxy group was formed along these "ditch".
The distant young galaxy photos taken by Hubble Space Telescope contains galaxies (original galaxies) that are being formed. Eighteen photos of the galaxies that are being formed. Each regiment is about 10 billion light years on the earth. The famous "Hubble Deep Space" photo. It showed more than a thousand young galaxies that formed less than one billion years after the formation of the universe. Hubble deep space pictures. The arrow may refer to the most distant galaxy found so far. Abel 2218 galaxy group. The photo reflects the "gravity lens" phenomenon in the universe. Two adjacent galaxies NGC1410 and NGC1409 absorb substances due to gravitational effects.

Then NGC
is fleeting with the skyrocketing, and the universe has returned to the usual expansion rate as seen today. In the first second after the birth of the universe, with the continuous expansion and cooling of the universe, in areas with "dense" energy, a large number of protons, neutron and electrons are condensed out of the background energy. After a hundred seconds, protons and neutrons began to be combined into the nucleus. In less than two minutes, the ingredients that constitute all atoms in nature are produced. After about 300,000 years, the universe has been cooled to the hydrogen atomic nucleus and the nucleus of the 氦 atomic is enough to capture electrons to form atoms. These atoms slowly gather into huge fibrous clouds under the action of gravity. Soon, the galaxy was formed. After a billion years after the Big Bang, hydrogen clouds and Yunyun began to gather together under the action of gravity. With the growth of the cloud group, the newborn galaxy is formed. At that time, the universe was smaller, and the original galaxies were relatively close, so the interaction was strong. As a result, some smaller clouds were condensed in a thinner cloud, while the rest were annexed by neighboring clouds.
At the same time, the original galaxy gradually increased due to the continuous fall of hydrogen and 氦. The greater the quality of the original galaxy, the more gas they attract. The movements of the clouds and the interaction between them and the interaction between them eventually started to rotate slowly. These clouds collapsed further under the action of gravity, and some rotating cloud groups formed a plate shape; the rest roughly became ellipsoids. These primitive galaxies began to form stars after getting enough material. At this time, the appearance of the universe is almost the same as today. Galaxy gathers together, like the islands in the Shanghai Ocean on the earth, inlaid in the vast gas clouds of the universe space. Such galaxies and galaxies are stretched into a fiber structure. The length can reach hundreds of millions of light years. Essence The cluster of such a large -scale galaxy appears in a broad space.
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different

stars: In the vast ocean of the universe, the "islands" of all kinds of states, the stars are dotted, and there are countless stars and various celestial bodies. Astronomy is called galaxy. The earth we live in is a huge galaxy -the galaxy. In the universe outside the galaxy, there are hundreds of millions of space islands like Galaxy, which are collectively referred to as the river galaxy.
Star group: Among the many stars in the galaxy, in addition to a single form, or forming a double star and gathering star, there are more stars gathered together. The number of stars exceeds 10 or more, and has a certain connection with each other, called a star group. What unite these stars is gravity. There are more than hundreds of thousands of members of the Star Group. They can be divided into two types: evacuation star group and spherical star group. There are stars in the galaxy, but there are different types of stars in different places.
Nebula: Nebula is a cloud -like sky composed of gases and dust of the interstellar space. The material density in the nebula is very low. If you measure the standards on the earth, some places are almost vacuum. However, the volume of Nebula is very large, often reaching dozens of light years. Therefore, the general nebula is much heavier than the sun. The shape of the nebula is in various ways. Some nebulas are very irregular and are filled with permeable. There is no clear boundary, which is called the nebula; some nebulas are like a disk, glowing lightly, like a big planet, so it is called a planet -like nebula.
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The evolution of the galaxy

If according to the theory of the Big Bang, the first -generation galaxy was formed in a billion years after the Big Bang. At the beginning of the birth of the universe, there was an outbreak of primitive energy. With the expansion and cooling of the universe, gravity began to play a role, and then the young universe entered a short stage of "skyrocketing". The micro -rise in the original energy distribution has also sharply enlarged from the micro -scale as the increase in the universe, thus forming some "ditch", and the galaxy group was formed along these "ditch".
The distant young galaxy photos taken by Hubble Space Telescope contains galaxies (original galaxies) that are being formed.
S eighteen separate photos of the formal galaxy group. Each regiment is about 10 billion light years on the earth.
On famous "Hubble Deep Space" photo. It showed more than a thousand young galaxies that formed less than one billion years after the formation of the universe.
Hubar deep space pictures. The arrow may refer to the most distant galaxy found so far.
Abel 2218 galaxy group. The photo reflects the "gravity lens" phenomenon in the universe.
The two adjacent galaxies NGC1410 and NGC1409 absorb substances due to gravity.

The irregular galaxy Dazhelun Cloud
As the sky is fleeting, the universe returns the usual expansion rate as seen today. In the first second after the birth of the universe, with the continuous expansion and cooling of the universe, in areas with "dense" energy, a large number of protons, neutron and electrons are condensed out of the background energy. After a hundred seconds, protons and neutrons began to be combined into the nucleus. In less than two minutes, the ingredients that constitute all atoms in nature are produced. After about 300,000 years, the universe has been cooled to the hydrogen atomic nucleus and the nucleus of the 氦 atomic is enough to capture electrons to form atoms. These atoms slowly gather into huge fibrous clouds under the action of gravity. Soon, the galaxy was formed. After a billion years after the Big Bang, hydrogen clouds and Yunyun began to gather together under the action of gravity. With the growth of the cloud group, the newborn galaxy is formed. At that time, the universe was smaller, and the original galaxies were relatively close, so the interaction was strong. As a result, some smaller clouds were condensed in a thinner cloud, while the rest were annexed by neighboring clouds.
At the same time, the original galaxy gradually increased due to the continuous fall of hydrogen and 氦. The greater the quality of the original galaxy, the more gas they attract. The movements of the clouds and the interaction between them and the interaction between them eventually started to rotate slowly. These clouds collapsed further under the action of gravity, and some rotating cloud groups formed a plate shape; the rest roughly became ellipsoids. These primitive galaxies began to form stars after getting enough material. At this time, the appearance of the universe is almost the same as today. Galaxy gathers together, like the islands in the Shanghai Ocean on the earth, inlaid in the vast gas clouds of the universe space. Such galaxies and galaxies are stretched into a fiber structure. The length can reach hundreds of millions of light years. Essence The cluster of such a large -scale galaxy appears in a broad space.
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The terms

1. Ellipher galaxy: there is no cantilever structure.
The is divided into: E0, E1 ... E7, the larger the number, the flatter the galaxy
2. The vortex galaxy n (1) The core part is oval: SA, SB, SC
(2) A stick -shaped structure: SBA, SBB
(3) Mirror galaxy: between E and SA: so
3. Irregular galaxy
IRR 1 (Roman numerals ): Blue color
IRR 2 (Roman numerals): yellowish colors
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Galaxy

Black, you can see that there is a filled light in the sky. This light belt is the round surface of the stars when we are in the galaxy. There are about 20 billion stars in the Milky Way, but they cannot be recognized with the naked eye because the distance is too far. Because the starlight is mixed with the interstellar dust gas, it looks like

The ballo -shaped star group
The center of the galaxy is located near the horses. The Milky Way is a medium -sized star system, with a diameter of about 120,000 light years. Its silver plate contains a large number of interstellar dust and gas clouds, gathered into a red star formation area, thereby constantly replenishing the hot young blue stars of the galaxy, forming many evacuation star groups or galaxy stars. There are about more than 1,200 types of evacuation stars. The silver disk surrounds a large silver halo, and the silver halo is scattered with stars and spherical star groups mainly composed of elderly stars.
The Milky Way in the direction of Swan-Renma seat.
The galaxy center (silver nuclear) section.
Pelasm of the galaxy center (silver nuclear) part of the II.
The galaxy of the weaver, the cattle star-the direction of the horses.
Galaxy in the direction of human horses.
This shield-Galaxy in the direction of people.
It is difficult to know the shape of the Milky Way from the perspective of us. However, with the development of modern science and technology, the advancement of detection methods overcome these obstacles to some extent, revealing some unexpected characteristics of the galaxy. For a long time, people have always thought that the galaxy is a typical vortex galaxy, similar to the fairy galaxy. But recent observations found that its central nuclear ball was slightly stick. This means that the galaxy is likely to be a rotal galaxy. In addition, the galaxy is a relatively active galaxy. The silver nucleus has a strong cosmic radiation, where the stars rotate around an invisible center at a high speed. This shows that there is a large quality black hole in the core of the galaxy.
The two shorter neighbors -Damai Zhelun Cloud and wheat Zhelunyun, both of which are irregular galaxies. Due to the role of gravity, the Milky Way continuously absorbs dust and gas from these two small stars, making the material of these two neighbors less and less. It is expected that in 10 billion years, the Milky Way will swallow all the substances in these two galaxies, and these two near neighbors will no longer exist.
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The external galaxy

. They are similar celestial systems similar to the galaxy, which exceeds the range of the galaxy, so they call them "outer galaxies". The fairy galaxy is a river alien in the fairy. The external galaxy is the same as the galaxy, and it is also composed of a large number of stars, stars, nebula and interstellar substances. At present, there are as many as 10 billion outer galaxies.

retail wholesale jewelry The galaxy or galaxy is the "island" of the huge stars in the universe. It is also one of the largest and most beautiful celestial systems in the universe. So far, people have observed about 10 billion galaxies at the universe. Some of them are closer to us and can clearly observe their structure; some are very far away. At present, the farthest galaxy is nearly 15 billion light years.

wholesale native jewelry What is galaxy halo?
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