The Earth may not be flat, but the universe is—and that's because it possesses zero net total energy. If it had positive or negative energy, the universe could be saddle-shaped or even spherical. In our case, the universe can be made from nothing. Get ready to get your zen on; philosophy just met astrophysics. Presented by Neil deGrasse Tyson Learn more about astrophysics at www.TheGreatCoursesPlus.com ------------------------------------------- The Great Courses is the global leader in lifelong learning and our video-on-demand service The Great Courses Plus gives you unlimited, uninterrupted access to a world of learning anytime and anywhere you want it. With courses on thousands of topics, you are sure to find something that will ignite your curiosity and invigorate your passion for learning. Enjoy a curated sampling of our full catalog of content by subscribing to our YouTube channel. We add new history, science, and math videos every week. ------------------------------------------- Read articles from the smartest experts in their fields: www.Thegreatcoursesdaily.com Find us on all our social channels: -Facebook: www.facebook.com/TheGreatCourses -Twitter: twitter.com/thegreatcourses​ -Instagram: www.instagram.com/thegreatcourses ------------------------------------------- #ShapeoftheUniverse #Astrophysics #NeildeGrasseTyson

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