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The next conference in the monthly cycle of IAP public conferences will take place on Tuesday, December 6, 2022 at 7:30 p.m., and will be given by David Elbaz (astrophysicist at CEA Saclay, “Cosmology and evolution of galaxies” laboratory). 50 minutes of presentation, followed by your questions on the chat: • “THE HISTORY OF THE UNIVERSE TOLD BY... &t=105s In 1905, Albert Einstein discovered that energy has the ability to tick away like sand in an hourglass. He did not know it yet, but the discoveries of the first stars and galaxies, nebulae and planetary systems, from our most powerful astronomical observatories to the James Webb space telescope embody a universal principle: if matter organizes itself, it is thanks to these visible and invisible grains of energy, photons. Mundus est fabula, said the inventor of the Big Bang Georges Lemaître, quoting Descartes, "the world is a story" that each generation strives to improve. We are the descendants of a universe sculpted by light.