Happy Birthday: Nichelle Nichols (born Grace Dell Nichols; December 28, 1932 – July 30, 2022) was an American actress, singer and dancer whose portrayal of Uhura in Star Trek and its film sequels was ground-breaking for African American actresses on American television. From 1977 to 2015, she volunteered her time to promote NASA's programs and recruit diverse astronauts, including some of the first female and ethnic minority astronauts.

Born in the Chicago suburb of Robbins, she trained in dance, and began her career as a dancer, singer and model in Chicago. As an actor, she appeared on stage, in television and in film.

On Star Trek, Nichols was one of the first Black women featured in a major television series. Her prominent supporting role as a bridge officer was unprecedented. She was once tempted to leave the series; however, a conversation with Martin Luther King Jr. changed her mind.

Towards the end of the first season, Nichols was offered a role on Broadway. Preferring the stage to the television studio, she decided to take the role. Nichols went to Roddenberry's office, told him that she planned to leave, and handed him her resignation letter. Unable to convince her to stay, Roddenberry told her to take the weekend off, and if she still felt she should leave, he would give her his blessing. That weekend, Nichols attended a banquet organized by the NAACP, where she was informed that a fan wanted to meet her.

I thought it was a Trekkie, and so I said, 'Sure.' I looked across the room and whoever the fan was had to wait because there was Dr. Martin Luther King walking towards me with this big grin on his face. He reached out to me and said, 'Yes, Ms. Nichols, I am your greatest fan.' He said that Star Trek was the only show that he, and his wife Coretta, would allow their three little children to stay up and watch. [She told King about her plans to leave the series because she wanted to take a role that was tied to Broadway.] I never got to tell him why, because he said, 'You cannot, you cannot... For the first time on television, we will be seen as we should be seen every day—as intelligent, quality, beautiful people who can sing, dance, and go to space… who are professors, lawyers… If you leave, that door can be closed, because your role is not a black role, and is not a female role; he can fill it with anybody, even an alien."

Calling Nichols a "vital role model", King compared her work on the series to the marches of the ongoing civil rights movement. The next day, she returned to Roddenberry's office to tell him she would stay.