In addition to creating a way to classify stars that's stlll in use today, Annie Jump Cannon, born #OTD in 1863, discovered 300 stars and was the first woman to be elected an officer of the American Astronomical Society. 🌟 . . . . . . #womeninscience #stars #astronomy #star #astronomer #science #history #sciencehistory #herstory #women #sky #nightsky #explore #space #spaceexploration #spacescience #cosmos