By developing a tool to measure distant stars and galaxies, astronomer Henrietta Swan Leavitt enabled the discovery of the expansion of our universe. She discovered more than 2,400 variable stars.🌠 . . . . . . . . #WCW #womancrush #womancrushwednesday #science #womeninscience #star #space #discover #discovery #inspire #inspiring #history #sciencehistory #women #invent #cosmos #lookup #nightsky #stars #astronomy #astronomer #universe