The farthest galaxies are more than 13,000 million light years from our Milky Way, almost at the limit of the visible Universe.
Its light has taken all that time to reach us. This means that we see them as they were more than 13,000 million years ago, only 500 million years after the Big Bang. Therefore, the farthest galaxies are also the oldest in the Universe.
The furthest galaxy discovered to date is the Abell 1835 IR1916. It is located behind the Abell 1835 cluster, in the constellation Virgo. It was discovered in 2007 by European scientists, from the VLT of Chile. It is at 13.2 billion light years and is getting further away.
Quasars are distant galaxies with a powerful black hole in their center. They are very young galaxies, typical of the early times of the Universe. They are over 12,000 million light years.
They are the most powerful and bright objects in the Universe. Although their light reaches us very weak, they can be up to a trillion times brighter than our Sun. They emit a huge amount of radiation. Over time, your black hole is no longer active. It is possible that many galaxies were quasars in the past.
The first quasars were discovered in the 50s and today more than 100,000 are known. Although they remain mysterious objects.
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