Exploring the Largest Objects in the Universe

What would happen if Antarctica’s ice suddenly melted, the oceans drained, or Yellowstone erupted tomorrow? Explore hypothetical Earth transformations, from a water-covered planet to a world without humans. Discover how long traces of humanity might survive after we vanished, what a second moon could mean for Earth, and what might happen if Earth became a moon of Saturn. Plus, explore the hypothetical question: what if Earth were flat? Enjoying these science explorations? Discover Popular Science, a free streaming channel featuring more from What If, plus engineering, rocket launches, movies, space, and Earth sciences: https://underknown.com/popularscience/ Support us on Patreon: https://www.patreon.com/whatifshow/membership Check out our other channels:How to Survive: https://bit.ly/how-to-survive-showAnimalogic: https://www.youtube.com/@UCwg6_F2hDHYrqbNSGjmar4wAperture: https://bit.ly/aperture-show T-shirts and merch: http://bit.ly/whatifstore Follow What If:Instagram: http://bit.ly/whatif-instagramDiscord: https://discord.gg/Bj5UnspbwEPodcast: http://bit.ly/yt-what-if-show-podcast What If is a mini-documentary web series exploring hypothetical worlds and possibilities through time, space, and chance, making complex science accessible and entertaining. Contact us: https://underknown.com/contact/ #whatif #science #earth #humanity

How deep does the ocean go? Explore the Mariana Trench, home to Earth’s deepest known point, and discover how its depths compare with Mount Everest. If Mount Everest were placed in the Mariana Trench, more than 2 km of water would still cover its peak. In a hypothetical ocean without water, a fall to the trench’s bottom would take roughly 3.5 minutes. The ocean covers about 71% of Earth’s surface, yet much of its seabed remains unexplored. Discover the extreme pressure, strange life, and vast depths beneath the waves. Explore more 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://whatsapp.com/channel/0029Va8VC502ER6r1yk1yP2Y📸 Instagram: http://bit.ly/whatif-instagram🐦 Twitter/X: http://bit.ly/whatif-twitter📘 Facebook: http://bit.ly/facebook-whatif Support What If 👕 Merch: https://bit.ly/shopwhatif❤️ Join this channel for exclusive perks: https://www.youtube.com/channel/UCphTF9wHwhCt-BzIq-s4V-g/join🙏 Patreon: https://www.patreon.com/whatifshow/membership More from Underknown 🧠 Aperture – Philosophy & Psychology: https://bit.ly/aperture-show🆘 How to Survive – Survival Science: https://bit.ly/how-to-survive-show 📩 Brand partnerships & collaborations: [email protected] Produced by Underknown: https://underknown.com

War, environmental destruction, global warming, species extinction... Spaceship Earth is being trashed by its crew. It seems humanity needs a Plan B. Fast. And the obvious candidate? Mars is staring down at us every night. Mars has a total surface area almost equal to Earth's entire land area, offering plenty of room. With large sums of money directed to space exploration, it's not so far-fetched to ask: What if we moved all 8 billion humans to Mars? 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 & PsychologyHow to Survive – Survival Science For brand partnerships & collaborations: [email protected] Produced by Underknown: Underknown

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 elsewhere:Instagram: InstagramDiscord: DiscordPodcast: Podcast 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. Contact us at Contact

You are the end result of a series of coincidences so specific and numerous that it boggles the mind. Some scientists even find it unsettling. Have you ever wondered: why me? Why this planet? Why is Earth so perfectly suited for life? Join us as we delve into whether Earth is almost too perfect and uncover the mysteries behind it. Key Moments: 00:00: Why Is Earth Suspiciously Perfect? 01:56: The Goldilocks Zone & Liquid Water 03:51: The Moon's Impact & Axis Stability 06:08: Earth's Core & The Protective Magnetosphere 09:48: Size, Atmosphere, & Essential Chemistry 11:41: Tectonic Activity & The Origins of Life 13:31: Big Brother Jupiter: The Cosmic Shield 14:12: Coincidence, Simulation, or Intelligent Design? 16:24: The Anthropic Principle & The Fermi Paradox 19:33: Perfect for Life or Just Perfect for Us? Discover more scenarios 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 FROM UNDERKNOWN ───────────────────────────── 🧠 Aperture – Philosophy & Psychology🆘 How to Survive – Survival Science ───────────────────────────── 📩 Brand partnerships & collaborations: [email protected] Produced by Underknown Get 10% off at Plaud: Exclusive link (Code: WHATIF)Amazon: PlaudNotePin S: Here (10% Code: T5T8G876)