Kurzgesagt Podcast: Science Revealed

It sounds like science fiction but for a brief moment in history, engineers actually tried to build a real flying saucer. In this episode, we explore one of the strangest aerospace experiments ever attempted: the Avrocar, a disc-shaped aircraft developed during the Cold War with support from the U.S. military. Inspired by the futuristic vision of a flying saucer, the project aimed to create a revolutionary aircraft capable of vertical takeoff, hovering, and high-speed flight. Why did scientists believe it could work? What engineering challenges stood in the way? And why did the project ultimately fail? From Cold War ambitions and cutting-edge technology to the dream of reshaping aviation, we uncover the fascinating story behind an aircraft that looked like it came straight from another world. Because sometimes… the future people imagine is even stranger than science fiction.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.

It’s the kind of disaster usually reserved for science fiction—but what if it actually happened? In this episode, we explore the terrifying possibility of an asteroid striking near or directly into a major city. Using real-world science and historical impacts as our guide, we examine what determines whether a city survives or is devastated. How powerful would the impact be? Could modern technology detect the asteroid in time? And what defenses does humanity have against a threat from space? From shockwaves and firestorms to evacuation plans and planetary defense systems, we break down the physics, the risks, and the odds of one of nature’s most catastrophic events. Because while asteroids helped shape Earth’s past… one could also shape its future.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.

The universe was not always filled with shining galaxies and blazing stars. In fact, after the explosive birth of the cosmos during the Big Bang, there was a long and mysterious period when the universe was mostly dark. Scientists call this era the Cosmic Twilight—a transitional age when the first faint lights of the universe began to appear. During this time, gravity slowly pulled clouds of hydrogen together, igniting the very first stars and galaxies. These early cosmic pioneers started to illuminate the darkness and reshape the universe forever. In this episode, we explore the chronology of the Cosmic Twilight, from the fading glow of the early universe after the Cosmic Microwave Background, to the birth of the first stars during the Cosmic Dawn, and the dramatic transformation known as the Epoch of Reionization. How did the first stars form out of complete darkness? What did the universe look like before galaxies existed? And how are modern telescopes beginning to uncover this hidden chapter of cosmic history? Journey with us back more than 13 billion years to witness the moment the universe slowly emerged from darkness—and the first light began to shine. Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.This episode includes AI-generated content.

You’ve probably heard the warning before: “Don’t drink water right after eating—it ruins digestion.” But is that actually true… or just a myth? In this episode, we separate fact from fiction and explore what really happens inside your body when you drink water during or immediately after a meal. Does water dilute stomach acid? Slow digestion? Cause bloating or weight gain? Or does it actually help your body break down food more efficiently? We dive into the science of digestion, stomach enzymes, hydration, and nutrient absorption to explain how your body truly handles liquids with food. Plus, we cover when drinking water helps, when it might cause discomfort, and simple habits to support better digestion overall. A clear, practical look at a common health myth—and what your body actually needs.Become a supporter of this podcast: https://www.spreaker.com/podcast/kurzgesagt-podcast-science-revealed--6600013/support.