Morphology and dynamics probe early galaxy formation. Contrary to previous understanding that early galaxies comprise smooth structures, high-resolution observations combined with gravitational lensing reveal at least 15 star-forming clumps within a rotating galaxy from 900 million years after the Big Bang. These observations challenge current theories of early galaxy formation.
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This is a summary of: Fujimoto, S. et al. Primordial rotating disk composed of at least 15 dense star-forming clumps at cosmic dawn. Nat. Astron. https://doi.org/10.1038/s41550-025-02592-w (2025).
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A young galaxy that consists of numerous star-forming clumps. Nat Astron 9, 1429–1430 (2025). https://doi.org/10.1038/s41550-025-02597-5
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DOI: https://doi.org/10.1038/s41550-025-02597-5
