Carolyn Shoemaker was an astronomer who co-discovered Comet Shoemaker-Levy 9 and set a record for comets discovered.Shoemaker didn’t have scientific training, but she learned her work by working side by side with her husband, Eugene Shoemaker, a planetary geologist. The two used telescopes to scan and photograph the night sky, then Shoemaker worked with those photographs to identify comets, asteroids, and other minor bodies in space.