The pioneering Black actress Nichelle Nichols, who played Lt. Uhura on “Star Trek,” has died at the age of 89. Nichols was one of the first Black women to have a leading role on television. In the 1960s, one of her biggest fans was Dr. Martin Luther King, who told her, “When we see you, we see ourselves, and we see ourselves as intelligent and beautiful and proud.” Nichols later worked with NASA to help the space agency recruit women and people of color.