What if the universe decided to turn against Earth? In this compilation, we explore what happens if two moons collide, a rogue planet enters our solar system, or a magnetar hits a black hole. From cosmic collisions to the ultimate fate of the universe, how long would humanity survive if […]
You stand on a planet that feels massive, yet Earth is a microscopic speck floating inside a star system that is virtually invisible against the backdrop of the cosmos. Every familiar boundary you know vanishes once you realize just how massive reality actually is: from the crushing pressure beneath our […]
Which worlds could humanity actually call home beyond Earth? From ancient Mars and a future Moon city to moving billions of people off our planet and reaching an Earth-like world, these scenarios explore the places humanity might one day be able to live. 00:05 What If You Lived on Mars […]
Earth may seem perfectly designed for life, but beneath the surface lies a world of terrifying possibilities. From the unimaginable depths of the oceans to a planet without oxygen, from Earth’s ancient past to a future without humanity, how fragile is the world we call home? Enjoying this video? Dive […]
Earth may seem perfectly designed for life, but beneath the surface lies a world of terrifying possibilities. From the unimaginable depths of the oceans to a planet without oxygen, from Earth’s ancient past to a future without humanity, how fragile is the world we call home? Enjoying this video? Dive […]
What if everything we know about the universe is only a fraction of the story? From objects so massive they defy imagination, to traveling back before the Big Bang, the universe shrinking around us, and the collision of galaxies that could reshape our night sky. But what if we could […]
Enjoying this video? Dive even deeper into the world of science and discovery with Popular Science, the free streaming channel bringing you more of what you love from What If, plus epic explorations in engineering, rocket launches, movies, space, and Earth sciences https://underknown.com/popularscience/ 00:05 – What If All of Antarctica’s […]
Enjoying this video? Dive even deeper into the world of science and discovery with Popular Science, the free streaming channel bringing you more of what you love from What If, plus epic explorations in engineering, rocket launches, movies, space, and Earth sciences https://underknown.com/popularscience/ 00:00 – What Would Dying by Prehistoric […]
Enjoying this video? Dive even deeper into the world of science and discovery with Popular Science, the free streaming channel bringing you more of what you love from What If, plus epic explorations in engineering, rocket launches, movies, space, and Earth sciences https://underknown.com/popularscience/ What if humanity didn’t just survive the […]
Support us on Patreon: https://www.patreon.com/whatifshow/membership 00:00 Countdown 00:05 What If We Swapped Our Sun With Other Objects in The Universe? 20:02 What If We Poured All of Earth’s Water on the Sun? 43:06 What If The Sun Was Smaller Than The Earth? 46:15 What If We Refueled the Sun With […]
