Scientists are going back 4 billion years … this is how the Sun was formed

Scientists decided to turn back, and found that an acceleration appeared to have occurred in the process of star formation in the Milky Way galaxy in conjunction with the emergence of our solar system more than 4.5 billion years ago, as a result of a collision between our galaxy and a smaller galaxy called Sagittarius.

And they added, Tuesday, that a collision like this does not usually involve direct interstellar collisions, but it may create the situation for star formation, for example by increasing the amount of gas in the galaxy or by mixing clouds of gases. According to “Reuters”.

More than 6 billion years

And the two galaxies collided for the first time more than 6 billion years ago. Since then, the sagittarius galaxy, a dwarf galaxy ten thousand times smaller than the Milky Way, has twice crossed our massive galaxy, which contains most of its nearly 100 billion stars. The three clashes between the two galaxies were accompanied by the outburst of star formation in the Milky Way.

And the European Space Agency’s Jaya Observatory revealed a long star process between 6.2 billion and 4.2 billion years ago associated with the first collision. Another two fortunes of star formation are associated with a collision between the two galaxies that peaked 1.9 billion years and billion years ago, and each lasted a few hundreds of millions of years. In turn, Thomas Royeth-Lara, astronomer at the Institute of Astrophysics in the Canary Islands, Spain and head of the research team published in the journal Nature Astronomer, “Some parts of Sagittarius and the Milky Way intersect, but the stars do not collide. Two stars are really rare.”

Fuse stars again

He added, “First, there was the addition of materials and gases from Sagittarius, which led to an increase in the amount of gases in our galaxy, which paved the way for the formation of new stars. Secondly, the collision occurred between clouds of gases from Sagittarius and the Milky Way, which ignited the formation of stars again.”

Third, he added, “the instability in gravity caused by the intersection can form the stars” by causing “ripples” in the density of the interstellar gaseous medium.

– .