Mae Jemison (actress)
Mae Carol Jemison, MD,  is an American physician and astronaut. She was the first African-American woman to travel in space, aboard the shuttle Endeavour. She served as the science mission specialist on the STS-47 Spacelab J flight, which launched . Jemison was inducted into the National Women's Hall of Fame in 1993. She is also a Star Trek fan. While in space, Jemison began each shift by informing Mission Control in Houston that "hailing frequencies were open."

In  she appeared as Lieutenant junior grade  in the  sixth season episode . Jemison is also a good friend of Nichelle Nichols, who visited her on the set while filming "Second Chances." She has the unique distinction of being the first "real" astronaut to ever appear on Star Trek. She was followed by E. Michael Fincke and Terry Virts, who appeared in , and later William Shatner himself in 2021, on private spacecraft company Blue Origin's second human spaceflight, NS-18, who became the oldest human ever to fly into space. 

Jemison also appeared in the television documentaries Star Trek: 30 Years and Beyond in  and How William Shatner Changed the World in .

Jemison is the leader of the , which seeks the launch of an interstellar voyage within the next hundred years. LeVar Burton serves on the group's advisory committee. 

Jemison also appeared as host of the Discovery Channel science show World of Wonder. Later episodes of the show were hosted by Michael Dorn.

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Performers
TNG performers