In the earliest chapters of cosmic history, stars unlike anything burning today governed the fate of infant galaxies — massive, metal-starved, and ferociously short-lived. Because those ancient fires are too distant to observe directly, astronomers at the University of Utah found a clever proxy: 29 metal-poor massive stars in nearby dwarf galaxies, close enough for Hubble's eye to read their light. The TEMPOS survey reveals that these primitive stars shed far less mass through stellar winds than their modern counterparts, meaning they shaped their galaxies through a different economy of energy