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Milky Way and Andromeda are faced 10 billion years ago
According to the tenets of modern astrophysics universe is constantly expanding. Things become further apart, as the space-time stretches into oblivion. Well, almost all. Scientists have long argued that the Andromeda Galaxy and the Milky Way are on a collision course, and have to face in about three billion years old. Currently, a team of European astronomers led by Dr Hongsheng Zhao of St Andrews University said that it might not be their first meeting. Scientists argue that the galaxies have been exposed, and it happened about 10 billion years ago.
столкновение Млечного Пути и Галактики Андромеды
Most cosmologists believe that the vast majority of mass in the universe consists of so-called dark matter. It is the gravitational pull of dark matter is the true cause of the collision the Milky Way and the Andromeda Galaxy, the latter must fall on our galaxy at a speed of 100 km / s.
The modern theory of gravity that predicts a collision Milky Way and the Andromeda galaxy are based on the theories of Newton and Einstein . These theories work well in small-scale astronomical, but a little at odds with the information obtained in the course of observations of nearby galaxies. Dr. Zhao said that predict the behavior of gravity of galaxies or clusters of galaxies may be due to the model, which was developed by Professor Mordechai Milgrom in 1983.
Milgromskaya modified Newtonian dynamics (MOND) describes the behavior of gravity in the larger astronomical scale. A team of scientists led by Dr. Zhao has used the theory of MOND to calculate the trajectory of the Milky Way and the Andromeda Galaxy. As a result, they have come to the inevitable conclusion – these two masses of the stars have already come across 10 billion years ago.
If the traditional model of gravity acting on the scale of galaxies, these galaxies under the influence of dark matter would combine for another 10 billion years ago.
If this hypothesis is based on the theory of MOND, is true, then it would be able to explain the current situation and the interaction between the Local Group of galaxies, and to put an end to the chase for the dark matter, which may explain the gravitational effects.
According to the theory of MOND, the Milky Way and Andromeda Galaxy collision could break up, borrowing from each other for a number of the matter. Of the stolen material can be created dwarf galaxies.
According to this theory, however, the Milky Way and the Andromeda Galaxy will meet again in a few billion years, but the effects of this collision may not be as catastrophic as seen by modern cosmologists.
At present, Zhao and his team in the hope of the world are trying to support the hypothesis of computer simulation show the interaction of the two galaxies. If they are right, our understanding of the universe may be wrong.
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Tags: big bang , gravity , the Milky Way , dark matter , the Andromeda galaxy .
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