This week on SPEXcast, we sit down with Jet Propulsion Laboratory (JPL) engineer Troy Hudson to discuss NASA's Mars InSight mission. InSight is scheduled to launch May 5th from Vandenburg Air Force Base on its journey to the surface of Mars. We discuss several of the instruments on InSight and go into a deep dive on HP^3, which Troy Hudson primarily worked on, including how the probe functions, its scientific objective, and the challenges of digging on another planet. You can check out additional links and references at https://blog.spexcast.com/mars-insight-troy-hudson .