(ORDO NEWS) — Astronomers have found many stars inside the Milky Way that arose after several rapprochements and collisions of our Galaxy and its satellite, the dwarf galaxy Sgr DEG, the press service of the European Space Agency said on Monday.
“The sun arose in the same era when stars began to appear, generated by the first rapprochement of Sgr DEG with the Milky Way. We cannot say for sure whether this event led to the collapse of the cloud where our luminary arose. However, this is likely, given the age of the solar system and the time of birth of the stars we found,” an astronomer from the Canary Islands Astrophysical Institute in Tenerife Carme Gallart said.
Gallart and her colleagues discovered new evidence that the story of the birth of the stellar “population” of the Milky Way is associated with its collisions with other galaxies, conducting a kind of census of all nearby luminaries using the GAIA orbital telescope.
So, thanks to these data, scientists can determine when starbursts occurred in our Galaxy and try to relate them to when it was approaching or colliding with its neighbors.
These calculations confirmed the assumptions of Gallart and her colleagues, and also indicated that the next outburst of star formation associated with Sgr DEG began in the Milky Way quite recently, about 100 million years ago.
Recall that in March, scientists, based on the data from the Gaia space telescope, determined the diameter of the halo of dark matter – a spherical region, which became the first measurement of the size of our Galaxy.
Later, using the largest telescope, the researchers found a star on Earth that moves in the orbit of a supermassive black hole in the center of the Milky Way, which confirms Einstein’s theory of relativity.
In addition, in May of this year, astronomers first recorded a burst of radio waves in the Milky Way galaxy, accompanied by an outbreak of x-ray radiation.
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