This isn't going to be a frummy question. When I've watched Star Trek, Star Wars, and their ilk, I've always been surprised that although the crews are diverse, I can't recall any characters being Jewish. I once wrote to the Star Trek people and suggested that it would be interesting if the Voyager crew discovered a Jewish colony in a distant solar system. Given that there are Jews all over this planet, and certainly a Chabad on almost every continent, why not? I've seen Jewish themes, e.g. Battlestar Galactica (with Lorne Green playing a future day Moses), but no Jews. Given that so many Sci Fi writers are Jewish, there must be someone out there, and I can't say I really know the genre. So please, where are the Jews in science fiction literature?
closed as off topic by Isaac Moses, Dave, Shmuel Brin, msh210♦ Feb 19 at 18:22
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Here is one from Babylon 5. The character's name is Ivanova.
Wandering Stars is a classic collection of Jewish-themed SF short stories. Authors include Isaac Asimov, Harlan Ellison, Robert Silverberg, and others. (There is a sequel to this collection.) From the Amazon description:
In addition, Jewish SF authors sometimes find ways to incorporate Judaism into their work. For example, Michael Burnstein's story collection I Remember the Future includes what may be his most-well-known story, "Kaddish for the Last Survivor", set in the near future and focusing on a character who sets out to be a living reminder of the Shoah after (IIRC) her grandmother, the last survivor, dies.