"Milky Way-like Galaxies Meet Their End in Galaxy Clusters"

Galaxy clusters serve as graveyards for Milky Way-like galaxies as they undergo mergers and experience gas stripping, leading to the cessation of star formation and the eventual transformation into giant elliptical galaxies dominated by old stars. Gas-depleted or gas-free galaxies are unable to form new stars, resulting in a "red-and-dead" state. Various events such as internal dynamics, external gravitational tugs, and galactic mergers can trigger star formation, but once a galaxy becomes gas-depleted, its fate is sealed.