At the edge of the visible universe

At the edge of the visible universe almost the farthest galaxies are more than 13,000 million light years away. Their light has taken that long to reach us. This means that as we were more than 13,000 million years, only 500 million years after the Big Bang. Therefore, more distant galaxies are also the oldest in the Universe. The most distant galaxy discovered to date is the Abell 1835 IR1916. It is located behind the cluster Abell 1835, in the constellation Virgo. It was discovered in the year 2007 by European scientists. This is 13,200 million light years away and each time more.

Quasars

Quasars are distant galaxies with a powerful black hole at its center. They are very young galaxies, typical of the early Universe. They are more than 12,000 million light years. They are the most powerful and brightest objects in the universe. Although it is light reaches us very weak, can be up to a trillion times brighter than our Sun emit a huge amount of radiation. Over time, the black hole is no longer active. Many galaxies may be quasars in the past. The first quasars were discovered in the 50’s and today are known more than 100,000.