Episode Details

Angela DiFulvio explains a theoretical method for detecting nuclear weapons in low Earth orbit to prevent catastrophes like the 1962 Starfish Prime experiment, which destroyed a third of existing satellites. She describes an "inspector" satellite designed to induce a unique radioactive signature from fissile material using high-energy protons. DiFulvio details technical challenges, such as "pulse shape discrimination," to distinguish weapon-related neutrons from background cosmic radiation in the harsh space environment. She suggests that an international agency like the IAEAmight oversee these inspectors to ensure space remains weapon-free. DiFulvio emphasizes that while tests can occur in classified environments, more research is needed on the survivability of sensing electronics. She warns that a modern orbital nuclear detonation would be catastrophic for global infrastructure, specifically mentioning the vulnerability of massive constellations like Starlink. (8)