Scientists have discovered thousands of “alien” stars in our galaxy
Our Milky Way is going to be properly supported by several smaller galaxies at once. Rather, he is already doing this. According to the livescience.com portal the researchers discovered several thousand strange stars on the edge of the Milky Way, concluding that stellar objects emerged from material formed in the large and small Magellanic Clouds – dwarf objects that are early or later become part of our spiral galaxy.
Why do the Magellanic clouds disappear?
The Magellanic clouds are dwarf galaxies closest to ours, which are located about 160 thousand light-years from the Milky Way. The discovered young stars, most likely, somehow migrated from the clouds to our outskirts, standing out among the “elderly” stars living in these parts of the galaxy. Adrian Price-Whelan, a researcher at the Center for Computational Astrophysics at the Flatiron Institute in New York, claims that the region chosen by the young stars is very, very far from us and the more vibrant galactic center. In addition, further analysis showed that the stars from the Magellanic clouds appear to be composed of very unusual ingredients unusual for our segment of the galaxy. Thus, the characteristics of light bands reaching the Earth indicate an extremely low content of metals and heavy elements, which directly indicates the extragalactic origin of the detected stellar objects.
Read also: Is it true that the Universe is 99% empty?
Researchers believe that most likely the gas is from the hydrogen stream surrounding the Magellanic clouds , at some point passed through our galaxy, creating powerful pressure at which the gas flow collided with similar substances of the Milky Way . This pressure, combined with the gravity of our galaxy, squeezed part of the Magellanic gas so much that it thickened under the influence of its own attractive force. As soon as this happened, some clumps became quite dense, eventually forming young and very light stars with no signs of the usual metals in them.
The discovery of non-metallic stars can help scientists find the Magellanic stream in space, which researchers suggest is located at a distance of about 90,000 light-years from Earth. If for some reason the Magellanic stream is closer, the merging of the Milky Way and dwarf galaxies can occur faster and earlier than modern astronomical models predict. Such an event can significantly increase the life expectancy of our galaxy, at the same time adding a large number of new stars to the night sky of our planet after about 5 billion years. If, of course, the Earth manages to somehow survive until this grandiose cosmic event.
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