Starship Life Support

 Dr. Jones will report on the design and cost of a starship, with emphasis on life support systems. He will describe a multigenerational interstellar voyage to colonize a new planet. Nuclear propulsion is required. The mission is more feasible if a small crew travels slowly and lands with minimal equipment. Growing food is about as expensive as taking dehydrated food. Highly reliable life support can be achieved by providing spare parts and full systems. One small slow multigenerational interstellar voyage to colonize a new planet would cost about as much as the Apollo program. We can go to the stars!