Watch The Inexplicable Universe: Unsolved Mysteries

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What do scientists know about the universe? What still remains to be uncovered? What are some of the next avenues of exploration? Professor Neil deGrasse Tyson's course The Inexplicable Universe: Unsolved Mysteries is a marvelous journey to the frontiers of the known (and unknown) universe and introduces you to tantalizing questions being addressed by the world's top scientists.

The Inexplicable Universe: Unsolved Mysteries is a Documentary & Biography series that is currently running and has 1 seasons (6 episodes). The series first aired on June 5, 2012. It has mostly positive reviews from critics and viewers, who have given it an IMDb score of 8.4.

The Inexplicable Universe: Unsolved Mysteries is available for streaming on the The Great Courses website, both individual episodes and full seasons. You can also watch The Inexplicable Universe: Unsolved Mysteries on demand at Amazon Prime, Amazon online.

The Great Courses
1 Season, 6 Episodes
June 5, 2012
Documentary & Biography
Cast: Neil deGrasse Tyson
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The Inexplicable Universe: Unsolved Mysteries Full Episode Guide

  • Brace yourself for a fascinating trip through dimensions higher than our own. In this lecture, you'll discover how quantum physics and string theory have opened our eyes to the possibilities of quantum foam, the multiverse, antimatter, and tachyons. Also, join Professor Tyson for a preview of the long-term fate of the universe (including the collision of galaxies, the burning out of stars, and the decay of orbits into black holes).

  • Scientists have made astounding progress in their grasp of the universe. But what still remains to be understood? Shoot off into the stars for a probing investigation of some perplexing aspects of space that science has uncovered in the last half-century. Learn about the mysterious trajectory of the Pioneer spacecraft (known as the "Pioneer anomaly"). Explore two of the longest-standing problems in modern astrophysics: dark matter and dark energy. And even try to map out the shape of space-time itself.

  • Turn now to some inexplicable--and undeniably fascinating--aspects of physics and our physical world. Among the many eye-opening topics you'll learn about in this lecture are the discovery of more and more elements on the periodic table; muon neutrinos, tao particles, and the three regimes of matter; the secrets of string theory (which offers the hope of unifying all the particles and forces of physics); and even the hypothetical experience of traveling through a black hole.

  • Did you know that electrons, discovered in 1897, have never actually been observed by scientists to this day? Or that quarks can only be studied in pairs? Or that as you travel faster or find yourself in a higher gravity, time ticks more slowly for you? Delve into these and other mind-warping facts and insights about the fundamentals of matter in a lecture that covers everything from particle physics to quantum tunneling to thermonuclear fusion.

  • Begin this journey by taking a closer look at concepts that were once unexplainable but are now better understood. You'll focus on two such former mysteries: the existence of an invisible "aether" through which light and sound were believed to travel and the orbit of Mercury, which seemed to violate Newton's fundamental laws of motion.