Among the various structures of galaxies, there is a kind of dark matter, which also has a very great impact on the composition of galaxies, what is dark matter, and what kind of influence does it have on galaxies.
The presence of dark matter
Although dark matter is a theoretically proposed invisible matter, it is very likely to be the main component of the matter in the universe, but its invisible nature also determines that it will not be any known matter that constitutes a visible celestial body.
In a large number of astronomical observations, many scientists have found strange phenomena in the universe that are suspected of violating Newton's gravitational attraction, and the occurrence of this phenomenon will be very well explained if the existence of dark matter is assumed.
In modern astronomy, the existence of dark matter is indicated in the observation results of microwave background radiation through observations such as the movement of celestial bodies, combined with the formation of large-scale structures of the universe.
However, dark matter still exists in large quantities in galaxies, star clusters and the universe, and scientists even speculate that the mass of dark matter may be much greater than the sum of the masses of these visible celestial bodies in the universe.
This also shows that the existence of dark matter has a very important role and influence on the composition and evolution of galaxies. The existence of dark matter is also one of the important factors in the formation of galaxy structure and the stability of galaxies.
Dark matter exists in galaxies
Although dark matter is an invisible substance that may exist in the universe theoretically, and it is not yet one of the substances that constitute visible celestial bodies, with a large number of astronomical observations, the existence of dark matter has been explained accordingly.
In galaxies, star clusters, and the universe, there are theories about the existence of dark matter. In galaxies, the presence of wood is not evenly distributed, and it also exists in different parts of the galaxy, but there are some differences.
According to the observations and research of scientists, there is a large amount of dark matter around our galaxy, and its existence forms a huge galactic halo that surrounds the entire galaxy.
It is likely that such a dark matter halo has spawned beyond the edge of the Milky Way, like a giant spherical structure that surrounds the Milky Way.
However, not only in the periphery of galaxies, but also in the interior of the Milky Way, there is also dark matter, just in the galactic disk, there is also dark matter, but the specific distribution and density, scientists still know little about it.
The existence of these dark matter lies not only in the galaxy cluster and the space between galaxies, the galaxy cluster is a huge structure composed of multiple galaxies, in which the gaps between galaxies may be filled with the existence of dark matter.
The existence of these dark matter, through the action of gravity, constantly affects the interaction between different galaxies, and also has a great impact on its evolutionary process.
Effect on galaxies
The existence of dark matter has a very important impact on the evolution and development of galaxies, and the uneven distribution of dark matter will lead to the imbalance of tidal force fields in galaxies.
When the density of dark matter in a certain area increases, the gravitational pull in this region will increase, and the gravitational force will also cause the surrounding area to lose its original stability, thus forming a very strong tidal force field.
This is the dynamics of dark matter, the gravitational pull of dark matter is a very important source of gravitational force in galaxies, which also makes the proportion of dark matter directly affect the motion and structure of galaxies.
When tidal forces occur, they not only cause the acceleration of the movement of celestial bodies, but also cause changes in the galaxies in the orbits of the stars, and even tear the stars apart.
In the process of collision and fusion of galaxies, the relative distribution of dark matter and the tidal forces formed also play a significant role, which will make them form different structures of various galaxies.
The gravitational pull of dark matter is the main force in the formation of the galaxy structure, and the dark matter causes the matter in the galaxy to accumulate continuously through the gravitational force, thus forming different structures in the central region and the surrounding areas of the galaxy.
The different proportions of dark matter also affect the shape of the galaxy after evolution, because the distribution of dark matter is more uniform than that of other matter, so that the center of the galaxy is more biased towards the distribution center of dark matter, so that the galaxy is distributed according to the different densities of dark matter, forming different galaxies.
The gas and dust in galaxies are also affected by the proportion of dark matter, and the distribution and mutual movement of gas and dust in galaxies will change differently through the increase of different proportions of dark matter.
The increase in the proportion of dark matter will make the gas and dust in the galaxy more concentrated in the central region of the galaxy, further strengthen the fusion of interstellar gases, and form larger gas clouds or molecular clouds, which will affect the evolution of galaxies, and then allow stars and planets to gradually form and evolve, which all have the role of dark matter.
The impact on the formation of stars and planets will also accelerate the evolution history of galaxies, and galaxies affected by dark matter will definitely complete the process of evolution relatively earlier, and even the formation of all stars and planets in the galaxy, driving the time scale of their evolution.
The existence of dark matter can be said to involve every part of the galaxy, although the distribution of dark matter in different proportions, the page has different effects on the surrounding area.
The existence of dark matter also provides a lot of help for understanding the evolution of the universe and the formation of galaxies, and it is also one of the keys to understanding these contents.
Whether it is the effect of gravity or the tidal force field, it has a very great role in observing and studying the evolution of galaxies and the distribution of internal matter.