Astronomers observe massive galaxy assembling 1.2 billion years after Big Bang

Astronomers observe massive galaxy assembling 1.2 billion years after Big Bang

Astronomers have identified a remarkably compact group of six young galaxies assembling just 1.2 billion years after the Big Bang, providing a rare glimpse into the early formation of massive galaxies. The discovery, detailed in a paper submitted to arXiv on July 13, challenges existing models of galaxy assembly. The galaxies were observed using the James Webb Space Telescope, with morphological analysis conducted via multi-component Sérsic fitting. Researchers, led by Ronaldo Laishram, noted that the findings could reshape understanding of cosmic structure formation. The study is pending peer review but represents a significant advancement in early-universe astronomy.