The formation of galaxies

There are two hypotheses about birth: one states that were formed from the collapse of material during the birth of the universe, so this theory considers that galaxies are almost as old as the Universe itself. While the second holds that have been formed from a merger of smaller galaxies, and are therefore younger than the Universe.

With the observation technique of the electromagnetic spectrum has been analyzed for the first time, separately two elements: carbon and nitrogen. Some chemical elements mark the birth and evolution of stars such as nitrogen or carbon. All gases that make up the galaxies are generated within it, with the exception of hydrogen and helium, indicating each stage of the life of the galaxy.

The analysis by the group of Spanish scientists UCM concludes that the location of each galaxy in the Universe determines how they were created. Those forming part of galactic cluster are formed very rapidly, while those found in areas of lower density are the result of a clustering process slower.

 Daniel Alejandro