After Star Trek was cancelled, Nichelle Nichols, aka Lieutenant Uhura, volunteered her time to help NASA recruit women and minorities to join the space agency. The 1977 video above is from that era. Nichols' impact can't be overstated. From Wikipedia:
Among those recruited (by Nichols' NASA special project) were Dr. Sally Ride, the first American female astronaut, and United States Air Force Colonel Guion Bluford, the first African-American astronaut, as well as Dr. Judith Resnik and Dr. Ronald McNair, who both flew successful missions during the Space Shuttle program before their deaths in the Space Shuttle Challenger disaster on January 28, 1986. Recruits also included Charles Bolden, the former NASA administrator and veteran of four shuttle missions, Frederick D. Gregory, former deputy administrator and a veteran of three shuttle missions and Lori Garver, former deputy administrator.