For the first time astronomers observe the formation of a massive galaxy cluster. The observations collected by the Atacama Large Millimeter / Submillimeter Array (ALMA) show that at least 14 distant galaxies will soon unite, possibly forming one of the most massive structures in the modern universe.
The galactic cluster, known as the protocluster, is about 12.4 billion light-years away and existed when the universe was only 1.4 billion years old. Galaxy clusters usually formed three billion years after the Big Bang. Finding such a massive cluster in the early universe is definitely a surprise.
"Capturing a huge galaxy cluster in formation is spectacular in and of itself," says Scott Chapman, astrophysicist at Dalhousie University in Halifax, Canada. "But the fact that this happens so early in the history of the universe poses a tremendous challenge to our present understanding of the way structures in the universe are formed.
The proton cluster is called SPT2349-56 Galaxies galactic destruction are filled with star-forming material and eject stars 1
Galaxy clusters are held together by gravity and contain hundreds of thousands of galaxies, huge amounts The mass of a galaxy cluster is comparable to one million billion Suns and their temperature can reach more than a million degrees Computer Models Point to SPT2349-56 They Formed Faster than Most Protoclusters in the Universe.
"It's a mystery to them how fast this cluster of galaxies grew so fast was not built over billions of years, as astronomers could n xpect, "said co-author Tim Miller of Yale University. "This discovery provides an incredible opportunity to explore how galaxy clusters and their massive galaxies come together in these extreme environments."
The protocluster was first observed in 2010, when a faint light spot came out of the massive structure. Subsequent observations of ALMA and other telescopes confirmed that the structure is indeed a protocluster at a very early stage of development.
"For the first time, ALMA gave us a clear starting point to predict the evolution of a cluster of galaxies, said Scott Chapman." Over time, the 14 galaxies observed will no longer star and collide, merging into a single giant galaxy. "