Galactic collision

Astronomers had set their sights on an area which is very far away from the earth. On searching the distant universe, they found about the beginnings of a massive cosmic collision.

As per two new studies, the crashes that the astronomers saw are in an early formation stage and the most abundant type of structure in the known universe. The recent findings suggest that the process that has occurred in the universe has taken less time than the computer models that have proposed about the happenings. The presence of an abundance of dusty star-forming areas in the collision raises the question about the evolution of the galaxies.

The research study which was focused on the galactic collision, make the scientists believe that it has already happened. The collection of fourteen galaxies which is known as SPT2349-56, are bursting themselves with the new stars that are getting created. According to a statement by European Southern Observatory (ESO), it defines the occurrence as an impending crash from the Earth, and we cannot see what is present in that happening at the merger site. The reason we cannot look at the things is due to the light, as the light takes a very long time to travel to us from that region through space.

Ivan Oteo, who is a postdoctoral researcher at the University of Edinburgh and the lead author of one of the studies, reveals about the star-bursting regions that “The lifetime of dusty starbursts is thought to be relatively short because they consume their gas at an extraordinary rate.” He added by saying “At any time, in any corner of the Universe, these galaxies are usually in the minority. So, finding many dusty starbursts shining at the same time like this is very puzzling, and something that we still need to understand.”

An astrophysicist, Scott Chapman, of Dalhousie University in Halifax, Nova Scotia worked on the second study and commented that “Having caught a massive galaxy cluster in [the] throes of formation is spectacular in and of itself. But the fact that this is happening so early in the history of the universe poses a formidable challenge to our present-day understanding of the way structures forms in the universe.”

These individual galaxies in galaxy clusters are held in dark matter as said by the National Radio Astronomy Observatory. The research was published on April 25th, 2018 in two papers. The work of Miller’s team was published in the journal Nature, and the work of the team led by Oteo appears was published in The Astrophysical Journal.


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