Explore a fascinating conference talk on nuclear propulsion systems, from practical applications to outlandish concepts. Delve into the advantages of nuclear reactions for propulsion, particularly in rocketry, where high energy-to-mass ratios are crucial. Examine various ideas humanity has developed to harness nuclear potential, including fusion, plasma confinement, and magnetic fields. Learn about nuclear bomb mechanics, shockwaves, and neutron behavior. Discover unique propulsion concepts like the nuclear dust drive and nuclear saltwater rocket. Investigate historical projects such as Project Rover and Project Wind, as well as advanced rocket engine designs and missile interceptors. Gain insights into nuclear reactor moderators, hydrogen reactors, and magnetic reactors. This comprehensive overview covers both somewhat reasonable and utterly insane nuclear propulsion ideas, offering a captivating look at the possibilities and challenges of this technology.