Scientists have discovered evidence of the giant Andromeda galaxy’s monstrous behavior that has just been revealed through more than nearly 7,500 unusual stars.
According to Scientific alert, For the first time, astronomers have found concrete evidence of massive “migration” of ancient stars in another galaxy. Is it close 7. 500 strange stars in the Andromeda Galaxy (Andromeda, also known as M31), “neighbor” nearest galaxy containing the Earth’s Milky Way (Milky Way).
To use Dark Energy Spectroscopy Instrument (DESI), American scientists collected spectroscopic data to map the stars inside Andromeda. This map includes the movements of the aforementioned strange stars in the inner halo of the galaxy.
Andromeda Galaxy
Andromeda Galaxy – (Photo: ESA).
According to the article published in the magazine Journal of Astrophysics, The position and movement show that the 7,500 stars above are not stars. “native” from Andromeda, which arrived there only about 2 billion years ago.
This points to a horrific historical period: Apparently Andromeda swallowed a galaxy and took these stars.
This behavior has also been observed in our Milky Way. It gradually absorbs certain stars from the dwarf satellite galaxies which are the Large Magellanic Cloud, the Small Magellanic Cloud and the elliptical dwarf galaxy Sagittarius. Previous studies have shown that the Milky Way once had nearly 20 “victim” like that.
This new observation serves as concrete evidence confirming previous theoretical studies of galaxies “monster” in universes like the Milky Way or Andromeda have reached spectacular sizes by swallowing other galaxies; At the same time, he claims that the history of Tien Nu is similar to that of the Milky Way.
“Galaxies like Andromeda and the Milky Way are made up of the ‘building blocks’ of many smaller galaxies throughout the history of the universe.” – commented astronomer Arjun Dey from the NOIRLab research center (USA), lead author of the study.
Even if it’s called being swallowed, the stars are “imported” often present many identifiable characteristics even after billions of years: different metallic properties, erratic movements, etc.
In about 2 to 4 billion years, scientists predict two more galactic collisions: the collision between the Milky Way and the Large Magellanic Cloud and Andromeda, both of which are hurtling towards us. It is possible that the Milky Way will continue to swallow the Large Magellanic Cloud because it is much larger, while the collision with Andromeda will be difficult to predict because both are “monster” galaxies of the universe.
Galactic collisions probably won’t destroy Earth. However, scientists estimate that this will cause at least one major catastrophe, due to the scenario “slightly” The most likely thing is that the Earth is pushed a little – enough to be ejected “living area” of the solar system.
Article source: NLD
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Scientists have discovered evidence of the giant Andromeda galaxy’s monstrous behavior that has just been revealed through more than nearly 7,500 unusual stars.
