Scientists managed to find galaxies that appeared in the first billion years since the Big Bang event. This is important if you want to understand the reionization of neutral atoms.
Researchers are trying to understand exactly how galaxies were created and evolved in that time span. They can be found when IR shooting, but many of them are low-mass and weak. It is believed that it was the large and bright specimens that played a major role in the reionization.
Such galaxies contain a huge amount of dust and create powerful rays at submillimeter wavelengths, so the corresponding telescopes are used for searching. Scientists used the mechanism of the South Pole to find these ancient dusty formations. The distance was determined using ALMA. As a result, managed to find the most distant galaxy, whose mass reaches 330 billion solar. Formed after 800 million years after the start of everything. She has an active process of star birth - several thousand per year. This is a wonderful specimen from the young universe, which will help to reveal certain stages in the galactic evolution.