James Webb Space Telescope discovers 'galaxy-killing' wind that may explain why some early galaxies lived fast and died young

Using the James Webb Space Telescope (JWST) and the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers may have uncovered new clues about a longstanding mystery in galaxy evolution: why so many massive galaxies in the early universe appear to have died far sooner than expected. Galaxies are often considered "alive" when they are actively forming stars and "dead" when star formation has largely ceased. In today's universe, dead galaxies are common. …