We dive into JWST’s image of Cosmos 2020-635829, the most distant jellyfish galaxy observed at z = 1.156. This 8.5-billion-year-ago system shows gas tails with newborn stars formed in the wake of fierce ram-pressure stripping, challenging ideas about when and how dense intracluster media develop. Join us as we explore what this means for early environmental quenching, galaxy evolution, and the dynamic physics that recycle material even in the universe’s most extreme environments.

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