Neil deGrasse Tyson interviews world-renowned physicist and cosmologist Stephen Hawking and discusses the mysteries of our universe with comedian Matt Kirshen, cosmologist Janna Levin, and theoretical physicist Michio Kaku. Bill Nye, the Science Guy, also comments.

Neil deGrasse Tyson interviews astronaut Scott Kelly, then discusses the science of human space flight with comedian Sasheer Zamata and astronaut Terry Virts. Comedian Chuck Nice interviews people in New York City. Jennifer Fogarty, a NASA biomedical scientist, discusses effects of space on the human body. Bill Nye, the Science Guy, also comments.

Neil deGrasse Tyson features his interview with surfer Kelly Slater, then discusses the science of surfing with Chuck Nice and William Finnegan.

Neil deGrasse Tyson interviews puppeteer Frank Oz, then discusses puppets in pop culture with comedian Adam Conover and astrophysicist Charles Liu. Comedian Chuck Nice interviews people at the New York Comic-Con. Andy Serkis, a performance-capture actor, joins them to discuss the art and science of character creation. Bill Nye, the Science Guy, also comments.

Neil deGrasse Tyson interviews neuroscientist Sam Harris, and discusses everything from free will to religion with comedian Godfrey and neuroscientist Andrew Newberg. Journalist Robert Wright joins them. Comedian Chuck Nice interviews people on the street. Bill Nye, the Science Guy, also appears.

Neil deGrasse Tyson interviews Margot Lee Shetterly, author of "Hidden Figures: The American Dream and the Untold Story of the Black Women Mathematicians Who Helped Win the Space Race," and actress Janelle Mone, who starred in the movie. He discusses NASA's hidden figures with comedian Sasheer Zamata and NASA Chief Historian Bill Barry. Tracy Drain, a NASA systems engineer, joins them. Bill Nye, the Science Guy, also appears.

Neil deGrasse Tyson interviews Stephen Colbert, host of "The Late Show" on CBS, and discusses the intersection of science and comedy with comedian Adam Conover and author Sophia McClennen. Father James Martin, SJ, joins them. Bill Nye, the Science Guy, also appears.

Neil deGrasse Tyson features his interview with actor Alan Alda and discusses science communication with comedian Matt Kirshen and neuroscientist Heather Berlin. Anthropologist Natalia Reagan joins them later.

Neil deGrasse Tyson features his interview with former astronaut Mae Jemison and discusses the challenges of interstellar travel with comedian Godfrey and theoretical physicist Lawrence Krauss. Biomedical engineer Ronke Olabisi contributes.

Neil deGrasse Tyson interviews novelist Salman Rushdie and explores the science of storytelling with comedian Eugene Mirman and literary scholar Jonathan Gottschall.

Neil deGrasse Tyson features his interview with master navigator and traditional Polynesian voyager Nainoa Thompson and discusses the science of celestial navigation with comedian Maeve Higgins and navigation instructor Frank Reed. Author Dava Sobel discusses the "longitude problem" from her best-selling book, Longitude.

Neil deGrasse Tyson interviews filmmaker and National Geographic explorer-in-residence James Cameron and discusses the intersection of storytelling, exploration, and science with Chuck Nice and Charles Liu.

Neil deGrasse Tyson interviews legendary oceanographer Sylvia Earle, aquanaut Fabien Cousteau, and actor Adrian Grenier and discusses Earth's oceans with comedic actor Scott Adsit and ocean conservationist Laure Katz.

Host Neil deGrasse Tyson joins Grammy-nominated pop star Katy Perry in Los Angeles, where Tyson answers all of her cosmic queries. In the Cullman Hall of the Universe, comedian co-host Sasheer Zamata and astrophysicist Charles Liu join Tyson to discuss science in pop culture and music.

Host Neil deGrasse Tyson sits down with Arati Prabhakar, former head of the U.S. Department of Defense's Defense Advanced Research Projects Agency (DARPA). Tyson is joined in the Cullman Hall of the Universe by comedian co-host Chuck Nice and national security journalist Sharon Weinberger to discuss the intersection of science fiction, technology and national defense. Adding to the discussion, rocket scientist Natalie Panek joins via video call and Hod Lipson demonstrates his self-aware robot.

Filmmaker, comic book fanatic and all-around geek ambassador, Kevin Smith sits down with host Neil deGrasse Tyson. Later, in the Cullman Hall of the Universe, Tyson is joined by comedian co-host Chuck Nice and astrophysicist Charles Liu as they discuss science fiction, comic books and the science of superheroes. StarTalk science correspondent and anthropologist Natalia Reagan sends a dispatch from San Diego Comic-Con, where hundreds of thousands of fans converge to share their passion for comics, science fiction, movies, TV and cosplay.

Host Neil deGrasse Tyson features his interview with renowned news anchor Katie Couric. Tyson is joined in the Cullman Hall of the Universe by comedian co-host Eugene Mirman and journalism professor Jeff Jarvis to discuss the intersection of science and journalism. Adding to the discussion, Chuck Nice chimes in with the crowds at the March for Science.

Legendary chimpanzee researcher Jane Goodall joins host Neil deGrasse Tyson for a featured interview. Tyson is joined in the Cullman Hall of the Universe by comedian co-host Chuck Nice and biological anthropologist Jill Pruetz to discuss chimp behavior, animal and environmental ethics and the evolutionary differences between chimpanzees and humans. Primatologist and anthropologist Natalia Reagan joins the conversation from a chimpanzee sanctuary in Georgia.

Neil deGrasse Tyson features his interview with Kareem Abdul-Jabbar and discusses the science of basketball with Chuck Nice and Charles Liu.

Neil deGrasse Tyson features his interview with Lance Armstrong and discusses the science of cycling with his in-studio co-hosts.