85% de l'univers est invisible — Feynman aurait adoré ce mystère

85% of the universe is invisible—and this is arguably the greatest mystery in all of modern physics. In this educational video, we delve into the heart of dark matter and dark energy, these two components of the invisible universe that no one has ever directly observed. From the strange rotation of galaxies discovered by Vera Rubin to the accelerating expansion of the universe, and including Einstein's famous cosmological constant, this cosmology and astrophysics documentary explores why nearly 95% of the cosmos still eludes us. A journey into the mysteries of the universe that Richard Feynman, the physics genius, would have loved: he liked to remind us that a good unanswered question is better than a false certainty. CHAPTERS 00:00 Introduction — The Invisible Universe 00:50 Ordinary Matter Makes Up Only 5% 01:45 Why Feynman Would Have Loved This Mystery 02:25 Vera Rubin and the Rotation of Galaxies 04:20 Fritz Zwicky and Dark Matter 05:15 Einstein's Gravitational Lensing 06:10 The Ball Cluster: The Decisive Proof 07:05 What Could Dark Matter Be? 08:25 The Underground Hunt for Particles 09:45 The Cosmic Microwave Background 10:35 The Balance Sheet: 5%, 27%, 68% 11:15 Dark Energy and Accelerated Expansion 13:05 The Cosmological Constant and the Quantum Vacuum 14:35 MOND, Quintessence, and Other Paths 15:25 The Future of the Universe and the Beauty of Mystery 16:30 Conclusion 🔔 Subscribe for more videos on astrophysics, cosmology, and the great mysteries of the universe. Like and comment: which mystery of the cosmos fascinates you the most? ⚠️ WARNING This video is strictly for educational and scientific popularization purposes. It is based on current scientific models and observations, which remain subject to debate, uncertainty, and revision. Some concepts have been simplified to make them easier for a wider audience to understand. The percentages and figures cited are estimates based on the most recent measurements and may change. The illustrative images are generated and stylized. #darkmatter #darkenergy #cosmology #astrophysics #invisibleuniverse #Feynman