There Is No Oxygen in Space — So How Is the Sun Burning? | Feynman Explains

#physics #sun #nuclearfusion #feynmantechnique What if everything you thought you knew about fire was wrong? Most of us learned in school that fire needs oxygen to burn — so how is the Sun blazing for billions of years in the cold, airless vacuum of space? The answer completely rewires how you think about energy, matter, and the universe itself. In this video, we explore one of the most mind-bending questions in physics, guided by the legendary Richard Feynman's way of thinking. The Sun doesn't "burn" the way a candle or a campfire does. There's no combustion happening 93 million miles away — what's actually going on is something far more powerful, far more ancient, and far more beautiful than ordinary fire. We break down the difference between chemical burning and nuclear fusion, explain how the Sun fuses hydrogen atoms into helium under unimaginable pressure and temperature, and reveal why nuclear reactions don't need oxygen at all. You'll understand what E=mc² actually means in practice, why the Sun loses millions of tonnes of mass every single second, and how that mass transforms directly into the light and warmth you feel on your face. Feynman believed that if you truly understand something, you can explain it simply. By the end of this 12-minute video, you'll be able to explain to anyone — in plain language — why the Sun burns without oxygen, and why that one fact opens a window into the deepest laws of physics. This is physics the way it was meant to feel: surprising, logical, and completely awe-inspiring. Disclaimer: This channel has no official affiliation with Richard Feynman, his estate, or any related organization. The narration and storytelling style are inspired by his legendary approach to teaching and making complex ideas feel simple. AI-generated voice may be used for educational storytelling purposes. No impersonation is intended — this content is created purely as a tribute to one of history's greatest scientific minds. All synthetic media is clearly labeled. This video exists solely for education, curiosity, and the love of learning. #️⃣ HASHTAGS #physics #sun #nuclearfusion #feynman #richardfeynman #space #astronomy #astrophysics #scienceexplained #howthesunworks #oxygen #combustion #chemistry #stellarphysics #emc2 #einsteins #quantumphysics #cosmology #spacescience #sciencefacts #mindblowinscience #educationalvideo #physicsforbeginners #learnphysics #starsexplained #universefacts #energyexplained #nuclearenergy #spacefacts #sciencecommunity 🔑 KEYWORDS how does the sun burn, sun without oxygen, nuclear fusion explained, feynman physics, richard feynman lectures, how stars burn, what is nuclear fusion, sun energy source, physics for beginners, space science explained, no oxygen in space, how fire works, chemistry of burning, hydrogen to helium, e=mc2 explained simply, mass energy conversion, stellar energy, how the sun works, why is space cold, sun facts, astrophysics basics, science education, curiosity science, solar energy physics, plasma physics, proton proton chain, fusion reaction, stars and energy, universe explained, mind blowing science