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Hydrogen emission lines have never been seen earlier than 550 million years after the Big Bang. So why does JADES-GS-z13-1-LA have one?
Ever since its launch, JWST has revealed the cosmos in unprecedented light.
The widespread discovery of early, bright, ubiquitous galaxies puzzled many.
Years of research was needed before we understood why they were so numerous.
However, a new mystery has just arisen with detailed measurements of a new, ultra-distant galaxy.
Known as JADES-GS-z13-1-LA, it appears typical of very distant galaxies in many ways.