According to Wikipedia, at least 13 Jews have visited space, and Martin Fettman is listed as one of them. According to his bio, he's a Veterinary Pathologist, and with regards to space travel:
Fettman was selected as a NASA payload specialist candidate in December 1991, as the prime payload specialist for Spacelab Life Sciences-2 in October 1992. He then flew on STS-58 in October 1993. Since the flight, he has made over seventy public appearances representing space life sciences research before higher education, medical, veterinary, and lay organizations, and visited over twenty K-12 schools around the United States and Canada. He is presently a member of the NASA Advisory Council Life and Biomedical Sciences and Applications Advisory Subcommittee.
But most importantly, according to his NASA bio, his recreational interests include "pistol marksmanship." Mazal tov!