Ask a Spaceman!

Astrophysicist Paul M. Sutter has been answering listener questions about the universe since 2015, and with over 270 episodes in the archive the show has built one of the most thorough back catalogs in physics podcasting. The format is simple: listeners submit questions, and Sutter picks one per episode to answer in detail. That means the topics range widely, from antimatter gravity and the age of the universe to specifically quantum subjects like the quantum eraser experiment, wave-particle duality, and the measurement problem. Sutter has a knack for explaining counterintuitive ideas by building from first principles rather than relying on analogies that fall apart under scrutiny. He publishes roughly twice a month, and the show carries a 4.8-star rating from over 800 reviews, which puts it among the highest-rated physics podcasts on Apple Podcasts. The Q and A format keeps things unpredictable in a good way. One episode might walk through the math behind dark energy, the next might tackle why the universe appears to be made of math at all. For quantum physics specifically, the episodes that address foundational weirdness, like complementarity, entanglement, and superposition, are some of the clearest explanations available in podcast form. If you like having a working physicist talk directly to you about whatever has been keeping you up at night, this is the show.