Scientists have made a new discovery in the evolution of universe as they have proposed that the first light in the Universe has likely come from “leaking” radiation of an early galaxy into the developing Cosmos.
The study, conducted by the astronomers at John Hopkins University, analysed the massive, star forming galaxies in an attempt to study the manner in which the radiation can leak via the clouds of cold gas surrounding all such collections of stars.
According to the scientists, these covers of cold and dark gas behave like a blanket that covers the star families, while holding in radiation so as to avert their ionization in intergalactic space.
Sanchayeeta Borthakur, assistant research scientist at John Hopkins University’s Department of Physics and Astronomy, said, “It is like the ozone layer, but in reverse. The ozone layer protects us from the radiation of the sun but we want the gas cover the other way around. The star forming regions in galaxies are covered with cold gases so the radiation cannot come out. If we can find out how the radiation gets out of the galaxy, we can learn what mechanisms ionized the universe.”
Scientists said that these gas clouds play an integral role in the formation of new stars. Despite, they obstruct the better study how ionizing radiation is produced by distant galaxies.
For better study of universe and its evolution, the astronomers studied the Galaxy J0921+4509, a starburst galaxy where new stars birth are commonplace.
While probing J0921, the scientists tried to explain how leaky galaxies led to the availability of electromagnetic radiation between galaxies.
The astrophysicists believe these galaxies ape many of the similar qualities as the first star families in our ancient Universe.
According to the scientists, the galaxy J0921 is 650 light years in diameter and therefore it is packed with young and active stars.
The new findings on the evolution of universe were reported in the journal Science.