Scientists still have only seen glimpses of the 'cosmic dawn', when stars were forming in the calm, dark cosmos.
An international team lead by Masami Ouchi of the University of Tokyo has found the most vigorous star-forming galaxy yet seen from the period - a huge mass of gas forming stars at a rate of around a hundred suns per year.
It's one of the most distant galaxies ever seen by mankind - and it's also unique. Although nine galaxies have been detected from the period just after Big Bang, the 750-million-year-old GN-108036 was forming stars far faster than the others, when most of the universe was still cold and dark.
The team obtained calculated the galaxy's distance from Earth to confirm that it is one of the most distant galaxies ever discovered.
Analysis of Hubble images showed intense brightness that made it clear stars were forming rapidly.
The astronomers found a large mass of gas, equivalent to about a hundred Suns per year, was forming stars.
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