Is the fear of heights innate or learned? Neil deGrasse Tyson, Chuck Nice, and Gary O’Reilly explore taking risks, the neuroscience of fear, and how to overcome it with freestyle rock climber and subject of the film Free Solo, Alex Honnold, and neuroscientist Heather Berlin.
Have aliens already secretly visited us? Neil deGrasse Tyson sits down with Steven Spielberg and screenwriter David Koepp to discuss their new film Disclosure Day, alien contact, and why Spielberg believes there’s more out there than meets the eye.
What would happen in a world with too much oxygen? Neil deGrasse Tyson and Chuck Nice break down how rocks actually float, warm blankets, and why oxygen isn’t actually flammable.
Did evolution never give us the ability to see reality as it actually is? Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly sit down with cognitive scientist Donald Hoffman to explore what neuroscience, evolutionary game theory, and consciousness suggest about the nature of reality itself.
What type of planets orbit black holes? Neil deGrasse Tyson and comic co-host Negin Farsad sit down with Mordecai-Mark Mac Low to crack open the mysteries of galaxy collisions, dark matter, and the massive planetary systems around black holes.
What’s the real difference between dreaming and waking consciousness? Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly sit down with sleep expert Matt Walker to answer fan questions about the most mysterious thing humans do every single night: sleeping & dreaming.
How do you get entangled particles? Neil deGrasse Tyson and comic co-host Chuck Nice unpack the experimental side of entanglement, superposition, and the quantum underpinnings of our universe with experimental physicist, Sean Hodgman.
Could spacetime curve in the opposite direction and produce a repulsive field instead of gravity? Neil deGrasse Tyson and comic co-host Chuck Nice tackle fan questions about photons, heat death, gravitational waves, neutron stars and more with astrophysicist Michelle Thaller.
Is there such a thing as objective truth? Are we living in a post-truth world? Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly sit down to build a toolkit for finding the truth in an era of motivated reasoning, misinformation, and alternative facts with science historian and professional skeptic, Michael Shermer.
![This striking image was captured using a fish-eye lens, giving it the distinctive look of a circular window, peering into a different world. Here the landscape at the [/public/teles-instr/lasilla/ La Silla] observatory in Chile can be seen wrapped around the edge, with the constellations of the Zodiac splashed across the early morning sky.](https://startalkmedia.com/wp-content/uploads/2026/07/Zodiac_in_the_morning_150122-23_ntt_zodiac_morning_cc-eq-ext-820x570.jpg)