What If: Science, Theory, and Possibilities

What If a Stainless Steel Pen Hit Earth at the Speed of Light? Sep 18, 2026 293 What would happen if a stainless steel pen hit Earth at 99.9% the speed of light? Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If BookArticles Join the Community DiscordWhatsAppInstagramTwitter/XFacebook Support What If MerchJoin this channel for exclusive perks: YouTube MembershipPatreon More from Underknown Ape

Planet 9 Might Be Something Much Worse Sep 17, 2026 1459 The Solar System is known to have 8 planets, but what if there is a hidden ninth one? Scientists have observed unusual activity beyond Neptune and Pluto, hinting at a massive, unseen object. Could this be a new planet, or possibly a tiny black hole? Join us as we explore these intriguing possibilities. Join the What If community: The What If Book Articles 💬 Discord📲 WhatsApp📸 Instagram🐦 Twitter/X📘

What If You Nuked Mars and Your Tripod Broke? Sep 16, 2026 263 Ever wondered what would actually happen if we nuked Mars? While that might not be the best idea, having the right tools for your own projects is a must. Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY Discord WhatsApp Instagram Twitter/X Facebook SUPPORT WHAT IF Merch Join this channel for exclusive perks Patreon MORE FR

What If a Black Hole Entered Our Solar System? Sep 15, 2026 5632 Have a collision idea? Tell us in the comments what you want to see us smash together next! Follow us for more cosmic explorations and simulations. 00:00: Intro01:22: Black Hole vs Earth20:56: Black Hole vs Jupiter41:13: Black Hole vs The Sun54:32: Black Hole vs UY Scuti1:05:00: Black Hole vs Solar System1:19:32: Black Hole vs Milky Way1:23:31: Black Hole vs Black Hole #co

ROXs 42Bb: The Most Confusing Object in the Universe Sep 14, 2026 304 ROXs 42Bb is an enormous gas giant located 470 light-years away, currently experiencing a cosmic identity crisis. This massive object is composed of hydrogen and helium, the same materials that make up stars, and features a glowing red core and raging atmospheric storms. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The Wh

The Largest Stars in the Universe Sep 11, 2026 292 Explore the true scale of the cosmos as we journey from our home star to some of the largest known objects in the universe. While our sun dominates our solar system, accounting for 99.86% of its total mass, it is surprisingly small compared to other stellar giants. In this episode, we compare the sun to several massive stars. Ever wondered what would actually happen? Dive into our biggest What If

What If You Lived Through a Galactic Collision with Milkdromeda? Sep 10, 2026 1691 Something colossal is on the brink for our galaxy. The Milky Way and its neighboring galaxy, Andromeda, are on a direct collision course, like two gigantic galaxy-sized trains sharing a track. An epic cosmic collision is imminent, occurring soon in terms of galactic timescales. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community.

What If You Traveled Five Billion Years Into the Future? Sep 9, 2026 318 The Sun has begun its red giant phase, expanding like an overheated plasma-filled balloon. It's about to consume Mercury, then epicly engulf Venus, and eventually, swallow Earth. Even now, it is broiling our planet to bone-scorching temperatures. This is Earth five billion years from now. But how did we get here? Let's take a journey through time. Ever wondered what would actually happen? Explore

What Happened Immediately After the Dinosaurs Went Extinct? Sep 8, 2026 308 Ever wonder what actually happened immediately after the dinosaurs went extinct? This episode explores the catastrophic events following the impact of the Chicxulub asteroid 66 million years ago. Explore our biggest What If scenarios and go deeper with the What If community: The What If BookArticles Join the Community DiscordWhatsAppInstagramTwitter/XFacebook Support What If MerchJoin this channel

What If You Fell Into Every Black Hole? Sep 7, 2026 5909 Have a collision idea? Tell us in the comments what you want to see us smash together next! 00:05: What If Our Universe Was Inside a Black Hole?21:28: What If a Black Hole Flew By Earth at the Speed of Light?39:16: What If You Spent a Nanosecond in a Black Hole?56:30: What If You Fell Into the Biggest Void in the Universe?56:30: What If We Destroyed a Black Hole?1:25:24: What If Earth

What If You Dig a Hole to Earth's Core? Sep 4, 2026 313 There's a problem with the Earth's core. It's right there under our feet, but we've never actually seen it. Today, we're going to address that. We're going to find a solution to drill all the way to the center of Earth. And then, we'll see you fall right through the planet. This is going to be fun. Or not. Ever wondered what would actually happen? Explore our biggest 'What If' scenarios and go dee

What If Earth Became a Type III Civilization? Sep 3, 2026 1481 This episode explores the fascinating possibility of Earth evolving into a Type III Civilization on the Kardashev scale. With trillions of planets in the Universe and no confirmed signs of alien life, it’s time to consider making interstellar noise, constructing megastructures, and potentially confirming whether we are alone in the cosmos. Discover how humanity could accelerate its evolution, poss

What If the Smallest Planet Turned into the Biggest Planet?! Sep 2, 2026 310 What if Pluto suddenly became the largest object in our solar system? This episode explores the cosmic consequences of the solar system's "underdog" dwarf planet growing to massive proportions. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY Discord WhatsApp Instagram Twitter/X Fa

Landing on Alien Planets Sep 1, 2026 6581 Enjoying this video? Dive 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. Support us on Patreon. Check out our other channels: How to Survive Animalogic Aperture Get your T-shirts and merch. Follow What If:

What If a White Hole and Black Hole Collided? Aug 31, 2026 268 Black holes are one of the most devastating objects in space, sucking up everything around them. But there's another space phenomenon that's just as destructive, known as a white hole. What would happen if these two objects met in space and collided? Who would win in this cosmic battle? And what is a white hole anyway? Explore our biggest What If scenarios and delve deeper with the What If communi

What If You Traveled to Before The Big Bang? Aug 28, 2026 291 Imagine compressing the entire known Universe, spanning 93 billion light-years and containing two trillion galaxies and countless celestial bodies, into a space smaller than a proton. This singularity represents the origins of our Universe, the moment before the Big Bang. Ever contemplated what might actually occur? Dive into our most profound What If scenarios and engage with the What If communit

Nuking Every Planet in the Solar System Aug 27, 2026 1547 What would happen if humanity decided to unleash nuclear weapons on every planet in our Solar System? From the scorching surface of Mercury to the icy edges of Neptune, this thought experiment pushes science, physics, and imagination to their limits. In this exploration, we examine how nuclear explosions would behave in diverse environments, such as the crushing atmosphere of Venus, the gas giants

What If Betelgeuse Replaced Our Sun? Aug 26, 2026 291 What if our Sun was suddenly replaced by the red supergiant Betelgeuse? Ever wondered what would actually happen? Explore our biggest 'What If' scenarios and go deeper with the What If community. The What If BookArticles JOIN THE COMMUNITY DiscordWhatsAppInstagramTwitter/XFacebook SUPPORT WHAT IF MerchJoin this channel for exclusive perksPatreon MORE FROM UNDERKNOWN Aperture – Philosophy & Psychol

What If the US Took Control of the Vatican Aug 25, 2026 299 What happens when the world’s most powerful political leader goes to war with the leader of 1.4 billion people? Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY Discord WhatsApp Instagram Twitter/X Facebook SUPPORT WHAT IF Merch Join this channel for exclusive perks Patreon MORE FR

What If the U.S. and Israel Stop Being Allies? Aug 24, 2026 276 The United States and Israel have been allies for nearly 80 years, a relationship defined by billions in weapons and dozens of UN vetoes. But what if this alliance isn't as unbreakable as we believe? Explore our biggest What If scenarios and delve deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY Discord WhatsApp Instagram Twitter/X Facebook SUPPORT WHAT IF Merch Join

What If You Died on Every Kepler Planet? Aug 21, 2026 312 NASA's Kepler Space Telescope has discovered 2,784 distant alien worlds. While some orbit within habitable zones and look like Earth, they are far from safe. Join us as we explore the lethal conditions of six specific Kepler planets. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY

What If the Strait of Hormuz Never Reopens? Aug 20, 2026 286 Higher gas prices? That's just the beginning. What happens if it never reopens? Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. 📘 The What If Book: https://bit.ly/WIFBook 📝 Articles: https://whatifshow.com/ ─────────────────────────────JOIN THE COMMUNITY───────────────────────────── 💬 Discord: https://discord.gg/Bj5UnspbwE 📲

Exploring the Largest Objects in the Universe Aug 19, 2026 1647 Today, we explore the colossal scale of the largest objects in our observable Universe. It's all about size, not mass. While black holes and neutron stars are incredibly dense, they don't make the cut on our list of massive objects. Join us as we delve into the vastness of space and discover just how 'huge' things can get. Timeline: 00:00 True Scale of the Largest Objects in the Universe01:34 Jup

Exploring Survival on TRAPPIST Planets Aug 18, 2026 322 39 light-years from Earth lies the TRAPPIST-1 star, illuminating seven Earth-sized exoplanets. These planets, packed tightly, are fascinatingly close to their star, with three potentially habitable. Join explorer Chase as he rates these celestial bodies, exploring which are most suitable for life and which are perilously deadly. Discover the unimaginable ‘What If’ scenarios within the TRAPPIST sys

What If America Made a Base on the Moon? Aug 17, 2026 320 NASA is planning to return to the moon, but this time, it's not just a visit. Welcome to Space Race 2.0, where the goal has shifted from planting flags to establishing permanent infrastructure and control. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. 📘 The What If Book 📝 Articles JOIN THE COMMUNITY 💬 Discord 📲 WhatsApp 📸

What If Earth Collided With Every Planet? Aug 14, 2026 3919 Every planet in the solar system is hurtling toward Earth for an epic collision. In this special planetary battle royale, we use Space Sim to simulate six increasingly destructive cosmic crashes to see the physics behind the destruction. From being swallowed by gas giants to the formation of a brand-new magma world, we explore if anything, or anyone, could possibly survive. Have a collision idea?

What If the U.S. Actually Invaded Iran? Aug 13, 2026 283 What would happen if the United States invaded Iran? While many might assume it would be similar to the war in Iraq, the reality of the geography and military strategy suggests a much different outcome. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community: 📘 The What If Book 📝 Articles ─────────────────────────────JOIN THE COMMUNI

What If You Grew 1cm Every Second Aug 12, 2026 1440 One second, you're your regular size, the next, you're towering over a skyscraper. And some 40 years later? You're the size of a planet. Yeah, you've been growing. ASTRONOMICALLY. Soon, you'll become a human bridge between Earth and the Moon. That is, if you don't collapse into a black hole. Today, we've got you growing 1 cm every second. Ever wondered what would actually happen? Explore our bigge

Nothing in This Universe Is the Right Size Aug 11, 2026 6047 Support us on Patreon From the first spark of life to the extinction of the dinosaurs, explore prehistoric Earth in one marathon watch. 🦕 Experience billions of years of evolution, giant creatures, and moments that shaped life as we know it. Check out our other channels: How to SurviveAnimalogicAperture T-shirts and merch What If elsewhere: InstagramDiscordPodcast What If is a mini-documentary web

What If the Earth Stopped Spinning for 5 Seconds? Aug 10, 2026 288 Hang on because we’re about to screech to a halt. That’s right, the Earth is going to stop spinning for five seconds. How much damage would this sudden stoppage cause? What would you experience in different parts of the world? And when the Earth starts spinning again, would it still be habitable? How would the day and night cycle be affected? Why would there be strong winds? Ever wondered what wou

What If Saturn Replaced Our Moon? Aug 7, 2026 302 Imagine looking up to see a gas giant 33 times wider than the Moon dominating the sky with its massive rings stretching across the horizon. But this stunning view comes with a heavy price. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY Discord WhatsApp Instagram Twitter/X Faceboo

What If You Watched a Sunset on Every Planet? Aug 6, 2026 326 You see, there are 2 trillion galaxies out there in the Universe. Within them, there are trillions of stars. The Universe is a strange place, and the view is about to get spectacular. So buckle up. We are traveling from Mercury to the edge of the known Universe, to witness the most beautiful, and deadly, alien sunsets you've ever seen. Ever wondered what would actually happen? Explore our biggest

Digging to the Earth's Core: Challenges and Discoveries Aug 5, 2026 1453 There's a problem with the Earth's core. It's right under our feet, yet we've never actually seen it. Today, we explore solutions for drilling to the Earth's center. What would happen if you fell through the planet? Let's find out. Discover the history of the Kola Superdeep Borehole and the challenges it faced. Understand the massive scale of drilling to the core and the effects of the Coriolis fo

What If Humanity Became Fully Optimized? Aug 4, 2026 327 What would happen if humanity reached its absolute peak? No disease, no inefficiency, no wasted potential—just a fully optimized species operating at maximum intelligence, strength, and coordination. Sounds perfect… right? If you want to learn more about Rezolve AI (NASDAQ: RZLV) go to their investor website: Rezolve AI Investor Website. This content was conducted on behalf of Rezolve AI PLC (NASD

What If Prehistoric Earth Never Changed? Aug 3, 2026 6815 What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way. Support us on Patreon Check out our other channels: How to Survive Animalogic Aperture T-shirts and merch What If elsewhere: Instagram

What If You Ate Dry Ice? Jul 31, 2026 274 What would happen if you actually ate dry ice? It looks like regular ice, but it's anything but harmless. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community below: The What If Book Articles JOIN THE COMMUNITY 💬 Discord 📲 WhatsApp 📸 Instagram 🐦 Twitter/X 📘 Facebook SUPPORT WHAT IF 👕 Merch ❤️ Join this channel for exclusive perks:

What If Jupiter Collided With Earth? Jul 30, 2026 299 The biggest planet in the Solar System has gone rogue. Now, it’s heading straight toward Earth with only 30 days until this gas giant wipes us out. Discover the speeds at which Jupiter might travel and the havoc it could cause along the way. Could we survive being consumed by this planetary giant? What would happen to the Asteroid belt? Ever wondered what would actually happen? Explore our biggest

What If the Largest Asteroid Hit Earth? Jul 29, 2026 312 Some seriously large asteroids have threatened Earth before. Some of these asteroids have little chance of hitting us but there are a few with very real chances of making contact. What happens if a large asteroid or comet hits Earth? And what are the chances something like Oumuamua or Bennu could actually hit our planet? Ever wondered what would actually happen? Explore our biggest What If scenari

Pluto: Astonishing Discoveries Jul 28, 2026 4871 Explore the remarkable facts about Pluto in this intriguing episode. What if you traveled to this distant world, or if Earth was as small as Pluto? Dive into these fascinating scenarios and more. Enjoying this episode? Dive even deeper into the world of science and discovery with Popular Science, the free streaming channel bringing you more of what you love, plus epic explorations in engineering,

What If a Tiny Black Hole Appeared in New York City? Jul 27, 2026 291 What if a black hole the size of a coin suddenly appeared in the middle of New York City? Would it instantly swallow everything or would something far stranger happen? Explore our biggest What If scenarios and go deeper with the What If community: The What If BookArticlesJoin the Community: DiscordWhatsAppInstagramTwitter/XFacebookSupport What If: MerchJoin this channel for exclusive perksPatreonM

Scientists Discovered Jupiter’s Secrets Jul 24, 2026 291 What secrets is the giant of our solar system hiding? 🌌 Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY DiscordWhatsAppInstagramTwitter/XFacebook SUPPORT WHAT IF MerchJoin this channel for exclusive perksPatreon MORE FROM UNDERKNOWN Aperture – Philosophy & PsychologyHow to Survive

What Will Humans Evolve To? Jul 23, 2026 277 What will humans look like in the future? From stronger bodies to bigger brains, or maybe even merging with machines. Human evolution is far from over. But it’s not just natural selection shaping our future anymore. Technology, environment, and even space travel could completely redefine what it means to be human. Ever wondered what would actually happen? Explore our biggest What If scenarios and

What If You Fell Into the Biggest Void in the Universe? Jul 22, 2026 278 The Boötes Void is one of the most mysterious places in space, spanning hundreds of millions of light-years and containing almost nothing. It is often called the "Great Nothing." What would it be like to travel there? Would you see complete darkness? Could you survive the journey through such an unimaginably empty region? What does this reveal about the universe's structure? Explore our biggest Wh

What If It Rained Oil? Jul 21, 2026 263 Black Rain is falling on Tehran and it doesn't stop there. Oily, toxic, and flammable. Roads turn to ice rinks, planes fall from the sky, your tap runs brown, and crops die in the ground. One lightning strike could ignite the world. Scientists already have a name for what comes after Black Rain. Drop it in the comments if you know. Ever wondered what would actually happen? Explore our biggest What

What If You Explored Every Kepler Planet? Jul 21, 2026 1733 Some planets might look promising from a distance, but stepping onto them could turn them into the most dangerous places in the universe. In this episode, we explore the extreme worlds discovered by the Kepler Space Telescope and imagine what would happen if a human explorer tried to survive on them. From crushing gravity and toxic atmospheres to molten lava oceans and massive gas giants, these al

What If You Dove Into the Sun? Jul 20, 2026 272 You’re traveling through our Solar System when suddenly, you have the opportunity to reach out and touch our biggest and brightest celestial body. Touching our Sun would require a heat-resistant spacesuit, the strongest sunscreen, sunglasses, and a lot of courage. The risks of touching the Sun are high. You could be instantly obliterated if you touched the Sun. Could you take the heat? Ever wonder

What If You Were the Last Person on Earth? Jul 17, 2026 277 So you wake up one day and find that you're the only person left in the world. Kind of cool, right? No obligations, no rules, no limits. Actually, go for the exotic fruits first. If your mangos and bananas are imported from overseas, chances are they'll be hard to get to. So eat them while you can, and enjoy every last bite. Ever wondered what would actually happen? Explore our biggest What If sce

Why Saturn is The Scariest Planet Jul 16, 2026 4215 Enjoy more science and discovery with Popular Science, the free streaming channel offering epic explorations in engineering, rocket launches, movies, space, and Earth sciences. Learn more. Support us on Patreon. Check out our other channels:How to SurviveAnimalogicAperture Get T-shirts and merch: What If Store Connect with What If: Instagram Discord Podcast What If is a mini-documentary web se

What If Earth Lost Gravity? Jul 15, 2026 293 What would happen if Earth suddenly lost gravity? 🌍 Gravity is the invisible force holding everything together, including the oceans, the atmosphere, the Moon, and even you. But imagine if that force suddenly disappeared. What would happen to the air we breathe, the water in the oceans, and the planet itself? Ever wondered what would actually happen? Explore our biggest What If scenarios and go de

Betelgeuse Replacing Our Sun: What Happens? Jul 14, 2026 1678 You can fit over a million Earths inside our Sun, but Betelgeuse, a massive red supergiant, could engulf over a billion Suns. It's in its final fusion cycles, nearing a violent supernova. If Betelgeuse replaced our Sun, it would consume half the Solar System before exploding. Survival prospects? Not promising. Explore this scenario and more. Help support animal welfare in our own backyards by visi

The Most Terrifying Planets in the Universe Jul 14, 2026 276 From small, eerie rocks to massive, nightmare-inducing worlds, we journey through the most terrifying planets in the universe! Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book: https://bit.ly/WIFBook Articles: https://whatifshow.com/ Join the Community: Discord: https://discord.gg/Bj5UnspbwE WhatsApp: https:/

Why The Megalodon's Extinction Saved Us Jul 13, 2026 280 For millions of years, the oceans were ruled by a predator so powerful it made today’s great white sharks look small. Meet the Megalodon, a 60-foot, multi-ton apex predator with a bite force stronger than any creature that has ever lived. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMM

What If We Dumped Our Trash Into Volcanoes? Jul 10, 2026 243 A volcano is one of the most unforgiving natural phenomena on Earth. If you were to fall into its magma-filled center, your body would quickly bubble up and disappear without a trace. So if they're so good at getting rid of things, why aren't we using them to dispose of our garbage? Has anyone tried it before? How would we transport all our trash to them? What dangers would be involved? Ever wonde

Episode 27: Earth's 4.5 Billion Years of Evolution Jul 9, 2026 1770 From a swirling cloud of cosmic dust to a planet teeming with life, Earth’s story is nothing short of unbelievable. We explore 4.5 billion years of planetary evolution, witnessing the birth of our world, the formation of the Moon, the cooling of Earth’s surface, and the emergence of the first oceans. This content was conducted on behalf of Nevada King Gold Corp. (TSXV: NKG) (OTCQB: NKGFF) and was

What If Earth Was As Big As the Sun? Jul 8, 2026 5788 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. Support us on Patreon. Check out our other channels:How to SurviveAnimalogicAperture T-shirts and merch: What If Store What If elsewh

Earth's Entire Evolution in 3 Minutes Jul 7, 2026 328 What if you could watch 4.5 billion years of history unfold in just 3 minutes? From a violent cloud of cosmic dust to a blue planet teeming with life, this is the complete story of Earth, compressed into one epic timeline. Ever wondered what would actually happen? Explore our biggest What If scenarios and go deeper with the What If community. The What If Book Articles JOIN THE COMMUNITY Discord Wh

What If You Lived on Mars 1 Billion Years Ago? Jul 6, 2026 272 Scientists have potentially discovered life on Mars! To understand this groundbreaking finding and its implications, journey back in time with us, starting from the very beginning. Support us: Support us on Patreon: patreon.com/whatifshow/membership Get the What If book: bit.ly/ytc-the-what-if-100-book Join this channel to get access to perks: youtube.com/channel/UCphTF9wHwhCt-BzIq-s4V-g/join Cont

What If You Lived on Mars 1 Billion Years Ago? Jul 3, 2026 274 Support us on Patreon: https://www.patreon.com/whatifshow/membership Get the What if book: http://bit.ly/ytc-the-what-if-100-book Join this channel to get access to perks: https://www.youtube.com/channel/UCphTF9wHwhCt-BzIq-s4V-g/join Interested in sponsoring our episodes or collaborating? Email us: contact@underknown.com Our other channels: How to Survive: https://bit.ly/how-to-survive-show Apertu

Traveling to Before the Big Bang Jul 2, 2026 1613 Take the entire known Universe, all 93 billion light-years of it. All two trillion galaxies, every star, every planet, every black hole, every quasar, every speck of dust, and you. Then squeeze it all down until it's smaller than a proton. Now, you've got yourself a singularity. The kind of singularity that was the beginning of our Universe. And that’s where you’re headed. The moment before the Bi

What if Planet X Was Actually Real? Jul 1, 2026 280 Over the past century, astronomers have speculated about the existence of a mysterious 9th planet lurking in the outer reaches of our Solar System. Although we've never directly observed the elusive Planet X, researchers keep finding more strange phenomena that seem to support its existence. Scientists believe that Planet X, also referred to as Planet 9, is about 17 times bigger than Earth, and ma

What If Earth was Flat But Gravity Still Existed? Jun 30, 2026 244 What if Earth was flat... but gravity still existed? In this mind-bending science experiment, we explore what would really happen if our planet were shaped like a giant disc, while gravity kept pulling everything “down.” Support us on Patreon: patreon.com/whatifshow/membershipGet the What if book: bit.ly/ytc-the-what-if-100-bookJoin this channel to get access to perks: youtube.com/channel/UCphTF9w

What if You Traveled to Earth 2.0? Jun 29, 2026 275 Discovered by NASA’s Kepler Space Telescope, Kepler-452b is one of the most Earth-like exoplanets ever found. It orbits in the habitable zone of a Sun-like star, about 1,400 light-years away, the region where temperatures could allow liquid water to exist. Support us on Patreon.Get the What If book: here.Join this channel to get access to perks: here. Interested in sponsoring our episodes or colla

What Happens When You Drop a Black Hole into a Pool of Water? Jun 26, 2026 248 A calm pool of water. A single splash. And suddenly, one of the most dangerous objects in the universe is sitting inches from your feet. Black holes destroy galaxies. Water fills swimming pools. So what happens when you put them together? Support us on Patreon: https://www.patreon.com/whatifshow/membershipGet the What if book: http://bit.ly/ytc-the-what-if-100-bookJoin this channel to get access t

If Saturn Replaced Our Moon Jun 25, 2026 1335 A huge gas giant suddenly appears in the sky. You look up in wonder. It's beautiful. And terrifying. The second Saturn replaces our Moon in its orbit, Earth would just as suddenly stop being a planet. We would become a moon. Yeah, scientists would have to reclassify Earth. That is, if any scientist, or any humans at all, could survive this planetary switch. Because Earth days would now be numbered

What If the World Lost Oxygen for Five Seconds? Jun 24, 2026 282 Imagine if all the Earth’s oxygen disappeared, not forever, just for 5 seconds. Would we just hold our breath? What would happen to the atmosphere and the environment? Here’s what would happen if the world lost oxygen for just 5 seconds. Support us on Patreon: PatreonGet the What If book: The What If BookJoin this channel to get access to perks: Join Channel Interested in sponsoring our episodes o

Discovering Kraken in the Mariana Trench Jun 23, 2026 7803 Dive deeper into science and discovery with Popular Science, a free streaming channel offering epic explorations in engineering, rocket launches, movies, space, and Earth sciences. Check it out here. Support us on Patreon: here Check out our other channels: How to Survive: hereAnimalogic: hereAperture: here T-shirts and merch: here Follow What If on:Instagram: hereDiscord: herePodcast: here What I

What If We Nuked Venus? Jun 22, 2026 265 Venus is often called Earth’s evil twin, similar in size, but completely hostile to life. With crushing pressure, surface temperatures hot enough to melt lead, and a runaway greenhouse effect gone wild, it’s one of the most extreme worlds in the Solar System. But what would actually happen if we detonated nuclear weapons on Venus? Support us on Patreon: https://www.patreon.com/whatifshow/membershi

What If We Swapped Our Moon With Ganymede? Jun 19, 2026 298 What would happen if Earth’s Moon suddenly vanished and Jupiter’s giant moon Ganymede took its place? Ganymede is bigger than Mercury, packed with ice and rock, and powerful enough to generate its own magnetic field. Support us on Patreon: hereGet the What If book: hereJoin this channel to get access to perks: here Interested in sponsoring our episodes or collaborating? Email us: contact@underknow

Episode 2016: What If 2016 Determined Humanity’s Future? Jun 18, 2026 265 What if one year quietly decided the fate of humanity? 2016 is often remembered for chaos, shock events, and a sense that something changed. But what if that year wasn’t just turbulent… what if it was a turning point that locked in humanity’s future? Support us on Patreon: patreon.com/whatifshow/membership Get the What if book: bit.ly/ytc-the-what-if-100-book Join this channel to get access to per

What Would Your Voice Sound Like on Different Planets? Jun 17, 2026 283 Explore how your voice would change on different planets, from the deep sounds on gas giants to silence on others. Can anyone hear you scream in space? Support us on Patreon: patreon.com/whatifshow/membership Get the What If book: bit.ly/ytc-the-what-if-100-book Join this channel to get access to perks: youtube.com/join Interested in sponsoring our episodes or collaborating? Email us: contact@unde

What If You Watched a Sunset on Every Planet? Jun 16, 2026 1676 Take your personal data back with Incogni! Use code WHAT at the link below and get 60% off an annual plan: https://incogni.com/what Explore the Universe with us as we journey from Mercury to the edge of the known cosmos, witnessing the most beautiful and deadly alien sunsets. Support us on Patreon: https://www.patreon.com/whatifshow/membership Get the What If book: http://bit.ly/ytc-the-what-if-10

What If China Invaded Taiwan? Jun 15, 2026 4976 Enjoying this video? Dive deeper into science and discovery with Popular Science, a free streaming channel offering epic explorations in engineering, rocket launches, movies, space, and Earth sciences. Support us on Patreon Check out our other channels:How to SurviveAnimalogicAperture T-shirts and merch: What If Store What If elsewhere:Instagram: What If InstagramDiscord: What If DiscordPodcast: W

What If the Largest Objects in the Universe Collided? Jun 12, 2026 315 In this episode, we're going to smash big things into each other. Why stop at smashing two gargantuan black holes, when you can do the same with the most massive stars, the largest planets, and even two galaxies? It's going to get explosive. Support us on Patreon: Patreon Get the What If book: What If Book Join this channel to get access to perks: Join Channel Interested in sponsoring our episodes

What If Theia Never Crashed into Earth? Jun 11, 2026 256 Roughly 4.5 billion years ago, a Mars-sized protoplanet called Theia slammed into early Earth, an event believed to have formed the Moon and shaped life as we know it. But what if that impact never occurred? Support us on Patreon: https://www.patreon.com/whatifshow/membership Get the What if book: http://bit.ly/ytc-the-what-if-100-book Join this channel to get access to perks: https://www.youtube.

What If You Jumped Into Saturn? Jun 10, 2026 1249 Saturn is famous for its magnificent rings. But did you know other gas planets like Jupiter, Uranus, and Neptune also have rings? Saturn's are just the largest and most visible. Saturn radiates twice as much energy into space than it receives from the Sun. And that means it must have an internal heat source. Do we know what it is? Absolutely not. Well, today we're sending Chase to find out! Made p

Mating with an Alien Jun 9, 2026 328 It's a beautiful night. Just you, a bottle of wine, and your partner drifting through the cosmos in a UFO. As you caress their green skin, you know tonight's the night you're mating with an alien. But would your anatomy be compatible? How would conception take place? And what would your child look like? Made possible with the support of Ontario Creates: ontariocreates.ca Support us on Patreon: pat

What If We Found Alien Life on K2-18b? The Super-Earth Exoplanet! Jun 8, 2026 279 Imagine discovering life beyond Earth right on a distant exoplanet! In this video, we explore K2-18b, a Super-Earth located 124 light-years away, in the habitable zone of its star. Could this alien world host life? What would it look like? And how would humanity react to such a discovery? Support us on Patreon: https://www.patreon.com/whatifshow/membershipGet the What if book: http://bit.ly/ytc-th

What If the Sun Became a Red Giant? Jun 5, 2026 280 The Sun won’t shine forever in its current form. When it runs out of hydrogen, it will expand into a red giant—fundamentally reshaping the Solar System. Support us on Patreon: patreon.com/whatifshow/membershipGet the What if book: bit.ly/ytc-the-what-if-100-bookJoin this channel to get access to perks: youtube.com/channel/UCphTF9wHwhCt-BzIq-s4V-g/join Interested in sponsoring our episodes or colla

What If You Fell Into the Biggest Void in the Universe Jun 4, 2026 1137 It's a place where nothing exists. A place without stars, planets, or galaxies. A place where you wouldn't meet a soul for hundreds of millions of light-years. This place is called the Boötes Void, or as I like to call it, The Great Nothing. Unless you find your way back to your ship, you'll be drifting through the perplexing dark of this mysterious nothing for billions of years. That is, your fro

What If Quetzalcoatlus Were Still Alive? Jun 3, 2026 277 A terrifying shadow ripples over the city as a gigantic prehistoric beast soars over the towers, moving faster than the cars on the freeway, hunting. And it's not alone; it hunts in a pack. This was... and IS Quetzalcoatlus. Because today, we're bringing this creature back from extinction. How exactly did Colombian drug lord Pablo Escobar get mixed up in all this? Hold on for that. What exactly is

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