Scientists have discovered that May strongest evidence proving the existence of a galaxy 13.2 billion years old, a finding that provides important information on early childhood universe.
”This is the May distant galaxy identified. If the universe were a man of 70 years, then we can say we found something in his childhood, about when he was 2.5 years. It is like an archaeologist makes a discovery about ancient history, “said Wei Zheng, The Johns Hopkins University.
Thanks to the cosmic background radiation, again discovered, scientists have learned that the universe was created 13.7 billion years ago. He progressed rapidly, so that only 1.4 billion years ago was not only full of galaxies, but become highly ionized hydrogen of galaxies. However, the steps by which the universe has reached this stage are not known precisely because there telescopes that can see very distant objects.
However, Zheng has found another way to be able to observe distant galaxies.
Objects with extremely strong gravity, and concentrations of galaxies bends and sometimes amplifies light from another object removed. Occasionally, warped space brings to the fore another object in May removed, a phenomenon known as gravitational lens effect.
Based on this phenomenon when Professor Zheng sought, together with a team of researchers, distant galaxies hidden behind massive clusters of galaxies. The Hubble Telescope, they found a distant galaxy formed 500 million years after the Big Bang.
Agglomeration of galaxies, known as MACS1149 2223 is one of the May strong gravitational lenses in the universe, with a mass of 2 million billion suns.
“Until now, scientists have discovered more than 100 ancient galaxies of 650-850 million years, but only one galaxy observed dates back 500 million years,” said Professor.
Since Zheng’s study only covered a small portion of the sky, researchers believe that they were either very lucky, or the universe is full of such distant galaxies. About the new galaxy, experts say that it is very compact and small, with only 0.1% of the size of the Milky Way.
Scientists will be able to see more such galaxies over six years, when it will be released Hubble’s successor, the James Webb Space Telescope.