Mae Jemison & Sally Ride
Sally was the first American lady in space and Mae was the first African-American lady in space!
Nancy G. Roman
Nancy worked on planning the Hubble telescope and was nicknamed "Mother Hubble" - more like MODEL Hubble now!
Margaret worked on making all the clever computer stuff (that we won't even try to understand) for the Apollo mission that first put people on the moon! The MOON!