Reinier Janssen is a staff scientist at the NASA Jet Propulsion Laboratory. Host Michael Holtz had the opportunity to talk to Janssen toward the end of his NASA Postdoctoral Program Fellowship, where he worked on novel instrumentation based on superconducting detectors. During this conversation, Holtz and Janssen discuss how he developed his interest in science, what the NASA NPP Fellowship has meant to his career, what drives him, and what happens next. To learn more about the NASA NPP, visit https://npp.orau.org/index.html