What is the history of the galaxy?
Our Milky Way galaxy is considered one of the original galaxies that have been formed at the dawn of the universe more than 13.5 billion years ago. The universe itself began 13.7 billion years ago with a big bang. For about 200 million years, the universe was dark because the matter has not yet confessed to the stars. During this period, the mass was slowly condensed into progressive pockets. These primordial stars of the "population III" are considered to be short-term and extremely massive-times of the weight of our Sun. Being so massive, they were also very unstable and produced supernova in just tens of millions of years and left behind black holes. Their remains were created by the stars of the population II with more typical masses.uši. Further studies will be needed to further narrow this number.
At the beginning of its history, the Milky Way could go through the active phase of the galaxy where the Central SUP was made of the condensed coreRMassive black hole and infalling gas from the galactic residue disk released a large amount of energy. It's hard to say, because the supermassive black hole in the middle of the galaxy has already swallowed the evidence. Astronomers believe that the source of the Radio Sagittarius A* is a supermassive black hole of the Milky Way. Sagittarius and* is a compact object containing 2.6 ± 0.2 million solar masses, limited in volume with a radius of no more than 17 light hours (120 AU).
As the Milky Way galaxy ages, many stars have passed through supernova, reducing the amount of light elements in the galaxy and increasing the amount of metals. This led to the rolling of Kovypulay and the stars like our Sun. Many stars in the galaxy have condensed into a rapid rotating galactic disk, 100 times longer than thick. This disk is surrounded by halo of old stars, called Galactic Halo.
For about three billion years, the Milky Way galaxy is expected to collide with its neighbor similarly size, Andromeda Galaxy. If this happens, it will not be particularly noticeableBecause the stellar collision rate will still be virtually zero, but the average stellar density will increase by a factor of about 2.