Annie Jump Cannon (1863-1941) was an American astronomer who contributed greatly to the classification of stellar spectra. It is her system that is now used for current stellar classification. Due to scarlet fever, Annie was almost completely deaf. She s discovered more than 300 variable stars on photographic plates and noted their spectral characteristics.
“A ship in port is safe, but that is not what ships are for. Sail out to sea and do new things.” —Grace Hopper