The galaxy, thought to have formed when the universe was less than a billion years old, is situated about 12 billion light-years from our solar system.

An international team of astronomers has completed astonishing new research about an early galaxy known as XMM-2599 which has proved so groundbreaking that it challenges existing scientific theories about the behaviour of the early post-Big Bang universe.

According to the scientists, who recently published their work in the Astrophysical Journal Letters, the galaxy managed to pump out over 300 billion stars by the time the universe celebrated its two billionth birthday, only to stop shortly after without any explanation.

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