American actress Nichelle Nichols, best known for her role in the 1960s sci-fi TV series Star Trek, has died aged 89.
Ms. Nichols broke barriers in her role as Lieutenant Nyota Uhura in the series, becoming one of the first black actresses in the US to play a figure of authority.
She was later employed by Nasa in an effort to encourage more women and African-Americans to become astronauts.
She died of natural causes on Saturday night, her son Kyle Johnson said.
In a statement posted on Facebook, Mr Johnson wrote: “I regret to inform you that a great light in the firmament no longer shines for us as it has for so many years.
“Her light however, like the ancient galaxies now being seen for the first time, will remain for us and future generations to enjoy, learn from, and draw inspiration.”
The Star Trek TV series broke down stereotypes in the 1960s by casting black and minority actors in high-profile roles.