Webb Telescope Discovers Galaxy-Killing Wind Near Universe’s Dawn
Galactic collisions, once thought to be destructive, are now understood to also trigger star-quenching winds, offering an explanation for the rapid growth and subsequent quiescence of massive early galaxies. Observations of the CRISTAL-02 system, a galaxy merger one billion years after the Big Bang, reveal powerful star-driven winds expelling gas at immense speeds, effectively halting star formation. This process, where intense bursts of star birth and death lead to outflows that energize and disperse gas, provides a mechanism for why these early galaxies lived fast and died young. The findings suggest this is a widespread phenomenon, potentially shaping the evolution of galaxies throughout cosmic history.
John Q. Hosedrinker