Matter as we know it appears in the first instants of the Universe, emerging from the cosmic darkness. To understand this birth, we must go back to times when space, time and energy were intimately linked, and where fundamental particles formed in an extremely dense and hot environment.
Between 0 and 380,000 years after the Big Bang, the Universe is so dense that light cannot escape: photons and matter are in permanent interaction. It is only after this period that light decouples from matter, giving rise to the cosmic microwave background radiation we observe today. Exploring this era requires understanding the infinitely small and the laws governing subatomic particles.
To probe these extreme conditions, scientists use instruments like the Large Hadron Collider (CERN). By recreating energies close to those of the early Universe, they seek to reveal the particles and fundamental interactions that nature still hides from us. These experiments allow us to approach the origins of matter and refine our understanding of the forces that structure the cosmos.
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At the Heart of Matter: The Proton's Well-Kept Secrets 
How an Electric Field Travels at 300,000 km/s with Almost Stationary Electrons 
Why Doesn't Matter Pass Through Matter? 
Magnets: From the Small Fridge Magnet to Levitation Trains 
From Electron Spin to Magnetism: Emergence of Mini-Magnets 
Free Electrons: From Jostling Balls to Dancing Waves 
Water Anomalies: A Common and Abundant Molecule in the Universe 
What is Dust? Between the Dust on Our Shelves and the Dust that Builds Planets 
Heat and Temperature: Two Often Confused Thermal Notions 
Electroweak Force: The Unification of Electromagnetism and the Weak Interaction 
Special Relativity: The Beginning of a New Physics 
The Higgs Boson: The Unification of Fundamental Forces
Quantum Entanglement: When Two Particles Become One!
The Pentaquark: A New Piece of the Cosmic Puzzle!
Why are Rare Gases
rare?
Brownian Motion: A Link Between Two Worlds
The 4 Articles of Albert Einstein from 1905 
Why does nuclear fusion require so much energy? 
Feynman diagrams and particle physics 
Stars cannot create elements heavier than iron because of the nuclear instability barrier 
Alpha, Beta, and Gamma Radiation: Understanding Their Differences 
Planck wall
theory 
Is Absolute Vacuum a Utopia? 
Giant Colliders: Why the LHC is Unique in the World 
The World of Hadrons: From the LHC to Neutron Stars 
Radioactivity, natural and artificial 
The World of Nanoparticles: An Invisible Revolution 
Schrodinger's Cat
Eternal
inflation 
What
is a wave? 
Quantum Field Theory: Everything is Fields 
Quantum Computers: Between Scientific Revolution and Technological Challenges
Bose-Einstein condensate 
Field concept
in physics 
From Probability Cloud to Particle: The Electron in Quantum Mechanics 
What is Entropy? A Journey into Disorder and Information 
Beta Radioactivity and Neutrino: A Story of Mass and Spin 
Spacetime: Space and Time United, understand this concept 
Time Measurement: Scientific and Technological Challenge 
Physical and Cosmological Constants: Universal Numbers at the Origin of Everything 
Spectroscopy, an inexhaustible source of information 
The Chemical Code of the Universe: Abundance and Origin of the Elements 
The size of atoms
Magnetism and Magnetization: Why Are Some Materials Magnetic? 
Quarks and Gluons: A Story of Confinement
Superpositions of quantum states 
Alpha decay (α)
Electromagnetic induction equation 
Fusion and Fission: Two Nuclear Reactions, Two Energy Paths 
From the Ancient Atom to the Modern Atom: An Exploration of Atomic Models 
The Origins of Mass: Between Inertia and Gravitation 
From the Nucleus to Electricity: Anatomy of a Nuclear Power Plant 
How
many photons to heat a coffee? 
Seeing Atoms: An Exploration of Atomic Structure 
Quantum tunneling of quantum mechanics 
Entropy: What is Time? 
The 12 Particles of Matter: Understanding the Universe at the Subatomic Scale 
The Atomic Orbital: Image of the Atom 
Antimatter: The Enigmas of Antiparticles and Their Energy 
What is an
electric charge? 
Our matter
is not quantum! 
Why use hydrogen in the fuel cell? 
Newton and Einstein: Two Visions for the Same Mystery 
Where does the proton's mass come from? 
Einstein's Universe: Physical Foundations of the Theory of Relativistic Gravitation 
1905, The Silent Revolution: When Einstein Rewrote the Laws of Nature 
What does the equation E=mc2 really mean? 
Between Waves and Particles: The Mystery of Duality 
The Supercritical State of Water: Between Liquid and Gas, a Fourth Phase? 
Quantum Mechanics and Spirituality: Another Way to See the World