Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Robert Joseph Cenker is an engineer and aerospace systems consultant who flew aboard Space Shuttle mission STS-61-C as Payload Specialist for RCA. Born November 5, 1948 and raised near Uniontown, Pennsylvania. Married to Barbara Ann (Cosentino) Cenker. They have two sons named Daniel and Brian and one daughter named Laura. Payload Specialists were generally selected for a single specific mission and were chosen outside the astronaut training process. They were not required to be United States citizens, but had to be approved by NASA and undergo rigorous training. In contrast, a Mission Specialist is selected as an astronaut first and then assigned to a mission.

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