John Wells and guest co-host Jack Rubin’s first guest is JULIAN GUTHRIE who has written HOW TO MAKE A SPACESHIP: A Band of Renegades, an Epic Race, and the Birth of Private Spaceflight. The 2nd guest is Dr. Linda Spilker who is the Cassini Project Scientist for the Jet Propulsion Laboratory in Pasadena California. Cassini is the largest and the most sophisticated planetary orbiter ever built. She was launched in October of 1997. She arrived in the Saturn system almost 7 years later after traveling 1 billion miles.